Terminal of rechargeable battery and method of manufacturing the same
A terminal of a rechargeable battery, which can provide a current path having reduced resistance between a bus bar and the terminal by separately forming a collector terminal and a coupling terminal while increasing a coupling force between the bus bar and the collector terminal, and a method of manufacturing the same are provided. In one embodiment, the terminal includes a collector terminal electrically connected to an electrode assembly disposed at the inside of a case and protruding toward the outside of the case, a lower fixing member having the collector terminal passing therethrough, a coupling terminal coupled to the lower fixing member in a sliding manner and protruding toward the outside of the lower fixing member, and an upper fixing member allowing the coupling terminal to pass therethrough and to be coupled thereto and covering the lower fixing member.
1. A battery terminal of a rechargeable battery, the battery terminal comprising:
a collector terminal electrically coupled to an electrode assembly in a case of the rechargeable battery;
a first fixing member electrically and mechanically coupled to the collector terminal;
a coupling terminal mechanically coupled to the first fixing member; and
a second fixing member mechanically coupled to the coupling terminal, wherein
the first fixing member has a first through-hole allowing a portion of the collector terminal to pass through,
the second fixing member has a second through-hole allowing a portion of the coupling terminal to pass through,
the first fixing member comprises:
a first planar portion having the first through-hole;
first extending portions extending away from opposite sides of the first planar portion with the first through-hole therebetween; and
second extending portions corresponding to and extending away from the first extending portions and towards each other with the first through-hole therebetween, and
the first planar portion, the first extending portions, and the second extending portions together define a first channel.
2. The battery terminal of claim 1 , wherein the coupling terminal comprises:
a body coupled to the first channel; and
a bolt portion extending away from the body.
3. The battery terminal of claim 2 , wherein
the second fixing member comprises:
a second planar portion having the second through-hole; and
third extending portions extending away from opposite sides of the second planar portion with the second through-hole therebetween, and
the second planar portion and the third extending portions together define a second channel.
4. The battery terminal of claim 3 , wherein the body is
coupled to the second channel, and
enclosed and secured in a space formed by the first channel and the second channel when the body is coupled to the first channel and to the second channel.
5. The battery terminal of claim 4 , wherein the third extending portions are adjacent to corresponding opposite side surfaces of the first planar portion when the body is coupled to the first channel and to the second channel.
6. The battery terminal of claim 4 , wherein the first extending portions and the third extending portions are coupled to four sides of the body when the body is coupled to the first channel and to the second channel.
7. A battery terminal of a rechargeable battery, the battery terminal comprising:
a collector terminal electrically coupled to an electrode assembly in a case of the rechargeable battery;
a first fixing member electrically and mechanically coupled to the collector terminal;
a coupling terminal mechanically coupled to the first fixing member; and
a second fixing member mechanically coupled to the coupling terminal, wherein
the first fixing member has a first through-hole allowing a portion of the collector terminal to pass through,
the second fixing member has a second through-hole allowing a portion of the coupling terminal to pass through,
the second fixing member comprises:
a planar portion having the second through-hole; and
extending portions extending away from opposite sides of the planar portion with the second through-hole therebetween, and
the planar portion and the extending portions together define a channel.
8. The battery terminal of claim 7 , wherein the coupling terminal comprises:
a body coupled to the channel, and
a bolt portion extending away from the body.
9. The battery terminal of claim 8 , wherein the bolt portion is welded to the planar portion.