Apparatus and method for assembling cell block of battery

1 . An apparatus for assembling a cell block of a battery, comprising:

an upstream assembly unit configured to assemble two cells into a two-cell body; and

a midstream assembly unit configured (i) to receive from the upstream assembly unit a first two-cell body and a second two-cell body assembled by the upstream assembly unit and (ii) to assemble the first two-cell body and the second two-cell body into a four-cell body from the first two-cell body and the second two-cell body,

wherein the upstream assembly unit and the midstream assembly unit are operably associated with each other.

2 . The apparatus of claim 1 , further comprising:

a downstream assembly unit operating in connection with the midstream assembly unit, and configured to assemble a plurality of four-cell bodies supplied from the midstream assembly unit into a cell block.

3 . The apparatus of claim 2 , wherein the downstream assembly unit is disposed to be inclined at a designated angle with respect to the midstream assembly unit, and the midstream assembly unit is configured to be tiltable at the same angle as the designated angle of the downstream assembly unit.

4 . The apparatus of claim 3 , wherein the downstream assembly unit comprises a slider configured to support the four-cell body and to be slidable on the downstream assembly unit.

5 . The apparatus of claim 3 , wherein the downstream assembly unit comprises a retractable pressing member.

6 . The apparatus of claim 3 , wherein the downstream assembly unit comprises a lift configured to rotate the downstream assembly unit in a direction parallel to a horizontal direction.

7 . The apparatus of claim 2 , further comprises a pallet detachably mounted on the downstream assembly unit to transport the cell block to an outside of the downstream assembly unit.

8 . The apparatus of claim 1 , wherein the upstream assembly unit comprises:

a cell holder for mounting the two cells; and

a pad attacher configured to attach an insulating pad to a bonding face of one of the two cells.

9 . The apparatus of claim 8 , wherein the upstream assembly unit further comprises:

a pad supplier configured to supply the insulating pad,

wherein the pad attacher is configured to hold the insulating pad from the pad supplier and to be movable toward the bonding face.

10 . The apparatus of claim 8 , wherein the cell holder is configured to assemble the two-cell body with the insulating pad attached between the two cells by rotating about a hinge point.

11 . The apparatus of claim 10 , wherein the cell holder transfers the assembled two-cell body to the midstream assembly unit.

12 . The apparatus of claim 8 , wherein the upstream assembly unit further comprises:

an adhesive applicator configured to apply an adhesive to bonding faces of the two cells.

13 . The apparatus of claim 12 , wherein the adhesive applicator is configured to be movable toward the bonding faces.

14 . The apparatus of claim 1 , wherein the midstream assembly unit comprises:

a rotary station configured to be rotatable; and

a gap pad attacher configured to attach gap pads to both surfaces of the first two-cell body disposed on the rotary station.

15 . The apparatus of claim 14 , wherein the gap pad attacher comprises a moving plate defining an insert opening, and

wherein the moving plate is configured to move toward the rotary station to insert the first two-cell body into the insert opening.

16 . The apparatus of claim 15 , wherein the gap pad attacher further comprises:

at least a pair of winding rollers disposed on the moving plate and configured to unwind the gap pad;

a strip member configured to attach the unwound gap pad to the first two-cell body; and

an operation driver configured to provide mobility to the strip member.

17 . The apparatus of claim 14 , wherein the rotary station comprises:

carrying arms configured to be rotatable and to dispose the first two-cell body received from the upstream assembly unit on the rotary station.

18 . The apparatus of claim 14 , wherein the rotary station is configured to transfer the assembled four-cell body to a downstream assembly unit.

19 . A method of assembling a cell block of a battery, comprising:

supplying two cells to an upstream assembly unit;

assembling the two cells into a two-cell body by the upstream assembly unit;

supplying to a midstream assembly unit a first two-cell body and a second two-cell body sequentially assembled by the upstream assembly unit; and

assembling the first two-cell body and the second two-cell body into a four-cell body by the midstream assembly unit.

20 . The method of claim 19 , further comprising:

assembling one cell block from a plurality of four-cell bodies assembled by the midstream assembly unit.