Chemical battery having pressure release mechanism and producing method

A technology of decompression mechanism and battery, which is applied in the fields of containers and current collector components of electrochemical batteries, can solve problems such as shortening battery service life, and achieve the effects of reducing manufacturing cost, increasing storage life, and simplifying manufacturing.

Inactive Publication Date: 2004-09-29
ENERGIZER BRANDS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, reducing the amount of electrochemical material disposed within the battery results in a reduced service life of the battery

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chemical battery having pressure release mechanism and producing method
  • Chemical battery having pressure release mechanism and producing method
  • Chemical battery having pressure release mechanism and producing method

Examples

Experimental program
Comparison scheme
Effect test

example

[0111] By looking at a computer-aided design (CAD) drawing, a photograph, or an actual section of a cell that has been sealed in epoxy resin and sectioned longitudinally, the total cell volume, current collector assembly volume, of each cell can be determined and the internal volume used for electrochemically active materials. The use of a CAD drawing, photograph or actual longitudinal section to observe and determine the size of the battery allows for the inclusion of any void volume that may exist within the battery. To measure the total battery volume, a section of the battery taken through its central longitudinal axis can be observed and the total volume determined by geometrical calculations. In order to determine the internal volume for the electrochemically active material, a section of the cell taken through its central longitudinal axis may be observed and the components comprising the internal volume, including the electrochemically active material confined within t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the can for releasing internal pressure from within the can when the internal pressure becomes excessive; a first outer cover positioned on the closed end of the can to be in electrical contact therewith and to extend over the pressure relief mechanism; a second outer cover positioned across the open end of the can; and an insulator disposed between the can and the second outer cover for electrically insulating the can from the second outer cover. According to another embodiment, the second cover is dielectrically isolated from a current collector.< / PTEXT>

Description

technical field [0001] The present invention generally relates to an electrochemical cell structure. More particularly, the present invention relates to containers and current collector assemblies for electrochemical cells, such as alkaline cells. Background technique [0002] FIG. 1 shows the structure of a conventional C-sized alkaline battery 10 . As shown, battery 10 includes a cylindrical can 12 having an open end and a closed end. The can 12 is preferably made of electrically conductive material so that an outer cover 11 welded to the bottom surface 14 at the closed end of the can 12 serves as an electrical contact electrode for the battery. [0003] Typically, battery 10 also includes a first electrode material 15, which may serve as a positive electrode (also referred to as a negative electrode). The first electrode material 15 may be preformed and inserted into the can 12 , or may be molded in place to contact the inner surface of the can 12 . For alkaline cells...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/70H01M4/75H01M6/06H01M6/08H01M50/167H01M50/186H01M50/193H01M50/571
CPCH01M2/0417Y02E60/12H01M2/0235H01M4/70H01M2/1241H01M2/12H01M2/0272H01M2/0413H01M2/0275H01M2/0267H01M2/023H01M2/0421H01M6/06H01M4/75H01M2/32H01M2/08H01M6/08H01M2/0408Y10T29/49108H01M50/56H01M50/182H01M50/1243H01M50/154H01M50/171H01M50/30H01M50/3425H01M50/571Y02P70/50H01M50/186H01M50/193H01M50/167
Inventor G·R·森德克G·A·莱希
Owner ENERGIZER BRANDS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap