Terminal of rechargeable battery, method of assembling the terminal of rechargeable battery, rechargeable battery module and method of assembling the rechargeable battery module

1. A terminal of a rechargeable battery, the terminal comprising:

a current collecting terminal electrically coupled to an electrode assembly inside a case, wherein the current collecting terminal protrudes from the case;

a terminal plate outside of the case and coupled to the current collecting terminal; and

a plate spring on the terminal plate and coupled to the current collecting terminal, wherein the plate spring has a hollow internal space and a throughhole on a top surface and a bottom surface, wherein the current collecting terminal passes through the throughhole on the top and bottom surfaces; and wherein peripheral edges of a top surface of the plate spring are recessed from a central portion thereof.

2. The terminal of claim 1 , wherein the current collecting terminal and the terminal plate are integral with each other as a single piece.

3. The terminal of claim 1 , wherein the current collecting terminal comprises:

a current collecting body electrically coupled to the electrode assembly and coupled to the terminal plate; and

a bolt portion extending from the current collecting body.

4. The terminal of claim 1 , wherein the terminal plate comprises:

a terminal body having a throughhole configured to allow the current collecting terminal to pass therethrough; and

a sidewall portion extending from a periphery of the terminal body.

5. The terminal of claim 1 , wherein an interior portion of the top surface of the plate spring protrudes past a top surface of the terminal plate.

6. The terminal of claim 1 , wherein the plate spring comprises any one selected from phosphor bronze, beryllium copper, and yellow brass.

7. The terminal of claim 1 , wherein an insulation member is located between the terminal plate and the case.