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Method for manufacturing primary battery

A primary battery and battery technology, applied in the direction of secondary batteries, primary batteries, lithium batteries, etc., can solve the problem of winding electricity is very thin and large surface

Inactive Publication Date: 2003-09-03
VARTA MICROBATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wound electrodes are difficult to achieve very thin and large surface designs

Method used

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  • Method for manufacturing primary battery
  • Method for manufacturing primary battery
  • Method for manufacturing primary battery

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 Shown is a part of the electrode strip produced from the manufacturing system, where the electrode 2 is laminated to the separator 1 . Each electrode 2 comprises an active material applied to the connecting electrodes, which are each equipped with a connecting piece 3 . For quadrupole impedance measurement, two spring-connected, preferably gold-plated, contacts 4 are arranged on these lugs 3 . Immediately after the impedance measurement according to the invention, the film is separated by a cut through the separator for the selection of the double cells on the separator strip 1 . Immediately after the measurement, defective double cells can be marked, for example by cutting off a connecting piece 3, and sorted out. These method steps can be added directly after the double cell fabrication process without wasting any time.

[0019] According to the invention, since bicells measured in this way generally show a steep Gaussian distribution of the absolute value...

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Abstract

A method for manufacturing a galvanic cell. This galvanic cell comprises many alternately stacked individual cells, the functionality of the individual cells is inspected by measuring impedance of the individual cells by using AC voltage before filling an organic electrolyte and before forming the cell pile. The individual cell comprises an multi-layer electrode sheet stacked on a separator, wherein at least one of the electrodes is a lithium intercalating electrode with a polymer matrix in which electrochemically active materials are finely dispersed, wherein the electrochemically active materials are insoluble in the polymer. Measurement of impedance is conducted as four terminal measurement, with a spring contact coming in contact with a stacked conductor 3 at the frequency of about 1 kHz.

Description

technical field [0001] It is an object of the present invention to provide a method for the manufacture of galvanic cells which in their final state may comprise a plurality of stacked cells in an electrolyte, wherein each cell may comprise a multilayer electrode film. At least one of the electrodes is a lithium insertion electrode in which an electrochemically active material insoluble in the polymer is finely dispersed in a polymer matrix. Background technique [0002] Rechargeable lithium cells typically contain electrode coils or contain packs of individual elements. In the case of a coil, the loose connection of the electrode and separator is coiled up, and only that electrode and the corresponding connecting electrode are firmly connected. A battery pack, on the other hand, consists of multiple individual cells. The individual cells or elements that make up such a battery are stacks formed of connecting tabs, active electrode membranes, and separators. Due to the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36G01R27/14H01M6/00H01M6/18H01M10/02H01M10/04H01M10/052H01M10/058H01M10/42
CPCY10T29/49108H01M10/04Y10T29/49829H01M10/4285H01M10/058G01R31/3641H01M10/052Y02E60/122G01R31/3865Y02E60/10Y02P70/50G01R27/00H01M6/16
Inventor R·哈尔德W·高格勒K·霍尔P·豪格T·维尔勒P·比尔克D·伊利克
Owner VARTA MICROBATTERY