Patent ID: 7670718

Claim:
A battery assembly, comprising: a rack assembly; six guiding strips made of metal of high conductivity and fixed to the rack assembly, a containing space being formed between the guiding strips and the rack assembly; two polar heads fixed to one end of the rack assembly and connected to the guiding strips by connecting wires; a plurality of lithium batteries orderly arranged in the containing space between the guiding strips and the rack assembly, a positive pole and a negative pole of each lithium battery being located correspondingly to at least one guiding strip; a plurality of guiding pieces, one end of each guiding piece being connected to each lithium battery, the other end of each guiding piece being fixed to the associated guiding strip, such that the lithium batteries are electrically connected to the guiding strips; and a plurality of safety units installed on the guiding pieces and corresponding in number to the number of lithium batteries and providing for cutting off the guiding pieces when a large current is produced; the rack assembly being I-shaped and including a separating plate and two side racks, each side rack being formed with three threaded holes; three guiding strips being disposed on each side of the rack assembly, that is, a mid guiding strip and two outer guiding strips, the ends of the guiding strips being attached to the two side racks of the rack assembly by screws, and each guiding strip being formed with a plurality of threaded holes; the two poles of each lithium battery facing towards the mid guiding strip and the adjacent outer guiding strips; and one end of each guiding piece being connected to a pole of the associated lithium battery, the other end of each guiding piece being locked in position by a screw in the threaded hole of each guiding strip, such that the lithium batteries are connected in parallel.