Secondary battery cell insulation test apparatus for simultaneous multiple-point insulation testing and method using the same

1 . A secondary battery cell insulation test apparatus, comprising:

a first probe portion disposed to be in contact with a case of a secondary battery cell;

a second probe portion disposed to be in contact with an electrode tab of the secondary battery cell; and

a tester for measuring insulation resistance of the secondary battery cell in a state in which the first probe portion and the second probe portion are disposed to be in contact with the secondary battery cell,

wherein the first probe portion is in line contact or surface contact with the case,

wherein the first probe portion comprises two probe portions connected in parallel with the tester, and

wherein the two probe portions are respectively disposed on both surfaces of the case and perform insulation testing simultaneously on both surfaces of the case.

2 . The secondary battery cell insulation test apparatus of claim 1 , wherein the first probe portion is in the form of a roller or a plate.

3 . The secondary battery cell insulation test apparatus of claim 1 , wherein the first probe portion is formed to have a length equal to or longer than a length of the case in a width direction of the case.

4 . The secondary battery cell insulation test apparatus of claim 1 , wherein the secondary battery cell is a pouch-type secondary battery cell.

5 . A secondary battery cell insulation test method, comprising:

a disposing operation of disposing a plurality of secondary battery cells in a moving direction of the first probe portion;

a contact operation of bringing a case and an electrode tab of a secondary battery cell among the plurality of secondary batter cells into contact with the first probe portion and a second probe portion, respectively;

a voltage application operation of applying a test voltage to the secondary battery cell in a state in which the first probe portion and the second probe portion are in contact with the secondary battery cell;

a defect detection operation of determining whether defects are present in the secondary battery cell by measuring an insulation resistance value of the secondary battery cell;

a moving operation of moving the first probe portion; and

a moving operation of moving the second probe portion from the electrode tab of the secondary battery cell to come into contact with an electrode tab of another secondary battery cell,

wherein the first probe portion is in line contact or surface contact with the case, and

the operations are repeatedly performed until an insulation test of the plurality of secondary battery cells is completed.

6 . The secondary battery cell insulation test method of claim 5 , wherein the first probe portion is disposed on at least one surface of the case.

7 . The secondary battery cell insulation test method of claim 5 , wherein the first probe portion moves in at least one of a longitudinal direction and a width direction of the case while maintaining contact with the case.

8 . The secondary battery cell insulation test method of claim 7 , further comprising:

before the contact operation, applying a conductive insulation test liquid to the case in contact with the first probe portion.

9 . The secondary battery cell insulation test method of claim 7 , wherein the first probe portion is formed to have a length equal to or longer than a length of the case in a width direction of the case.

10 . The secondary battery cell insulation test method of claim 5 , wherein the plurality of secondary battery cells are disposed in a width direction of the secondary battery cells.

11 . The secondary battery cell insulation test method of claim 5 , wherein in the determination operation, when an insulation resistance value of the secondary battery cell is measured to be lower than a preset reference value, the secondary battery cell is determined to have insulation defects.