Electrode sheet manufacturing device
An electrode sheet manufacturing device includes a pair of rolls that press an electrode active material layer formed on an electrode sheet, a press pressure adjusting mechanism that adjusts a press pressure of the pair of rolls, a temperature sensor that detects a surface temperature of at least one of the pair of rolls, and a controller. The controller is configured to adjust the press pressure, based on the surface temperature of the at least one of the pair of rolls detected by the temperature sensor.
1 . An electrode sheet manufacturing device comprising:
a pair of rolls including a lower press roll and an upper press roll, wherein the pair of rolls press an electrode active material layer formed on an electrode sheet;
a press pressure adjusting mechanism that adjusts a press pressure of the pair of rolls, wherein the press pressure adjusting mechanism includes a pair of bend cylinders that bend the rolls, the pair of bend cylinders arranged on opposing sides of the rolls between a respective shaft portion of the upper press roll and a respective shaft portion of the lower press roll;
a temperature sensor that detects a surface temperature of at least one of the pair of rolls; and
a controller,
wherein the controller stores correlation data between the temperature detected by the temperature sensor and a thickness of the electrode sheet in advance, and
wherein the controller is configured to control the press pressure by adjusting a bend pressure with which the pair of bend cylinders bend the rolls, based on the surface temperature of the at least one of the pair of rolls detected by the temperature sensor and the correlation data.
2 . The electrode sheet manufacturing device according to claim 1 , further comprising:
a coolant supplying device that supplies a coolant to the rolls,
wherein
the controller is further configured to adjust, based on the temperature detected by the temperature sensor, an amount of the coolant that is supplied from the coolant supplying device.
3 . The electrode sheet manufacturing device according to claim 1 , wherein
the press pressure adjusting mechanism includes a lifting device that lifts and lowers one of the pair of rolls with respect to the other one of the pair of rolls, and
the controller is further configured to control the lifting device, based on the temperature detected by the temperature sensor, to adjust the press pressure.
4 . The electrode sheet manufacturing device according to claim 1 , wherein
the temperature sensor is a non-contact type temperature sensor.
5 . The electrode sheet manufacturing device according to claim 1 , wherein the temperature sensor is a first temperature sensor, and wherein the electrode sheet manufacturing device further comprises:
a second temperature sensor,
wherein
one of the first temperature sensor and the second temperature sensor detects a temperature of an end portion of at least one of the pair of rolls, and
the other one of the first temperature sensor and the second temperature sensor detects a temperature of a central portion of at least one of the pair of rolls.
6 . The electrode sheet manufacturing device according to claim 5 , wherein
the correlation data is further comprised of correlation data between the temperatures detected by the first and second temperature sensors and the thickness of the electrode sheet.