Accumulator cell assembly

Abstract

PROBLEM TO BE SOLVED: To provide a serial connection structure of a storage element in which compactification is enabled by suppressing the length of a cylindrical battery and in which connection resistance can be suppressed.SOLUTION: In the serial connection structure 30 of the storage element, a positive electrode body and a negative electrode body are formed by installing a polarized electrode 48 composed of active carbon, a conductive material and a binding agent at least on one face of current collector foil, the upper storage element 33, the center storage element 35, and the lower storage element 37 are formed by winding the positive electrode body and the negative electrode body in a state of being separated by a separator, and a plurality of the storage elements 33, 35, 37 are connected in series. The serial connection structure 30 of the storage elements is constituted so that first and second enlarged current collector foils 46, 58 with at least twice the width of the polarized electrode 48 are prepared, the first and the second current collector foils 46, 58 are continuously succeeded by neighboring the storage elements, and so that the storage elements are serially connected.

Description

technical field [0001] The present invention relates to a storage battery assembly manufactured by forming a plurality of storage batteries by winding a positive electrode body and a negative electrode body separated by a separator onto a winding core and connecting the storage batteries together in series Forming. Background technique [0002] For example, in JP-A-11-26321 there is proposed a cylindrical battery made by connecting together a plurality of storage batteries storing electric power in batteries and capacitors and the like. FIG. 23 shows such a prior art cylindrical battery with a battery connection structure in series. [0003] Referring to FIG. 23 , a plurality of storage batteries 301 constituting a cylindrical battery 300 are connected in series. These accumulators 301 connected in series are accommodated in a cylindrical metal case 302 . [0004] Each storage battery 301 is a wound body formed by forming polarized electrodes on the surface of a current c...

AI Technical Summary

Problems solved by technology

[0010] In addition, since the positive wire portion 303 of one of the adjacent storage batteries 301, 301 is connected to the negative wire portion 304 of the other storage battery 301 in order to connect a plurality of storage batteries 301 in series, a large current appears at the connection when current flows. connection impedance, and it is difficult to reduce the impedance of these connections

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