Battery pack
A technology for battery packs and square batteries, applied in secondary batteries, battery pack parts, secondary battery manufacturing, etc., capable of solving short circuits in square batteries, poor welding of connecting pieces, disconnection of connecting parts 30 from terminals 31, 32, etc. problem, to achieve the effect of productivity improvement
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[0043]Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view showing main parts of a battery pack according to an embodiment of the present invention. In a state in which a plurality of flat prismatic batteries Ba2 in which negative terminals 3 protrude from a sealing plate 2 are stacked in the thickness direction, each adjacent The two prismatic batteries Ba2 are electrically connected to each other by the connection member 4 .
[0044] First, the connection member 4 described above will be described based on the perspective views of the drawings. This connection member 4 is formed with the following parts: a flat plate joint portion 7, which is overlapped on the sealing plate 2 of one of the two adjacent rectangular batteries Ba2 and also serves as the positive terminal at the same time, and joined by welding; The end portion of the flat joint portion 7 is bent to the vertical direction to form t...
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