Pressing apparatus including fluid and electrode and electrode assembly manufacturing method using the same
The present invention relates to a pressing apparatus capable of uniformly pressing an object to be pressed using a pressure adjustment portion having a fluid contained therein irrespective of the shape of the object and a pressing method using the same.
1. A pressing apparatus comprising:
a contact portion having a shape or position configured to be changed depending on a shape of a target object to be pressed;
a pressing portion configured to apply uniform force to the contact portion; and
a pressure adjustment portion located between the contact portion and the pressing portion, the pressure adjustment portion having a fluid contained therein,
wherein the contact portion has a plurality of protrusions configured to be individually movable relative to the pressing portion,
wherein the pressure adjustment portion has a plurality of pressure adjustment parts individually connected to corresponding ones of the plurality of protrusions of the contact portion, and
wherein the pressing portion has a plurality of pressing parts individually connected to corresponding ones of the plurality of pressure adjustment parts.
2. The pressing apparatus according to claim 1 , wherein the contact portion has a contact pattern configured to change a pressure applied to the target object depending on the shape of the target object.
3. The pressing apparatus according to claim 2 , wherein the contact pattern is an oblique pattern, an X-shaped pattern, or a dot type pattern having a plurality of micro-scale protrusions.
4. The pressing apparatus according to claim 1 , wherein the fluid of the pressure adjustment portion is connected to the plurality of protrusions.
5. The pressing apparatus according to claim 1 , wherein the fluid of the pressure adjustment portion occupies less than 90% of the pressure adjustment portion.
6. The pressing apparatus according to claim 1 , wherein the pressing apparatus comprises:
an upper roll comprising the contact portion, the pressing portion, and the pressure adjustment portion; and
a lower roll having an identical construction as the upper roll.
7. The pressing apparatus according to claim 1 , wherein the contact portion has a contact pattern configured to simultaneously contact an entirety of a confronting surface of the target object during a beginning of a pressing of the target object.
8. An electrode and electrode assembly manufacturing method comprising:
providing a pressing apparatus comprising a contact portion having a shape or position configured to be changed depending on a shape of a target object to be pressed, a pressing portion configured to apply uniform force to the contact portion, and a pressure adjustment portion located between the contact portion and the pressing portion, the pressure adjustment portion having a fluid contained therein, the contact portion having a plurality of protrusions configured to be individually movable relative to the pressing portion, the pressure adjustment portion having a plurality of pressure adjustment parts individually connected to corresponding ones of the plurality of protrusions of the contact portion, and the pressing portion having a plurality of pressing parts individually connected to corresponding ones of the plurality of pressure adjustment parts;
preparing an electrode or an electrode assembly that is the target object to be pressed;
disposing the target object in the pressing apparatus; and
pressing the target object using the pressing apparatus.
9. The electrode and electrode assembly manufacturing method according to claim 8 , wherein, during the pressing of the target object, the shape of the contact portion or a pressing force applied to the contact portion is changed depending on the shape of the target object.
10. The electrode and electrode assembly manufacturing method according to claim 8 , wherein, during a beginning of the pressing of the target object, the contact portion simultaneously contacts an entirety of a confronting surface of the target object.