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Arrangement and method for monitoring pressure within a battery cell

A battery cell, internal pressure technology, applied to electrical components, secondary batteries, secondary battery charging/discharging, etc., can solve cost sensitivity and other issues

Inactive Publication Date: 2008-01-16
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Smaller units are very cost sensitive due to high production volumes

Method used

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  • Arrangement and method for monitoring pressure within a battery cell
  • Arrangement and method for monitoring pressure within a battery cell
  • Arrangement and method for monitoring pressure within a battery cell

Examples

Experimental program
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Embodiment Construction

[0022] FIG. 1 shows a coil-shaped measuring wire around the cell skin of a cylindrical unit 1 , which includes a cell skin 3 on which the measuring wire 2 is wound in a coil shape. One end of the measurement line 2 is connected to the unit sensor 4 . The other end of the measurement line 2 is connected to the electrode 5 of the unit 1 . The unit skin 3 is located in an elastic casing 6, eg in a sleeve made of soft plastic or foam. During the generation of pressure inside the unit 1, the unit 1 shall allow expansion of the mechanical dimensions of the unit.

[0023] FIG. 2 shows the deformation of the measuring line 2 shown in FIG. 1 due to the pressure rise inside the unit 1 . In this figure, the expanded barrel cell skin 3 is shown. It is expanded within the elastic casing 6 . It is evident that in the middle of the unit 1 the diameter expansion of the coil 2 is greatest. Therefore, the circumference (the length of the measuring line) and the effective area of ​​the coil...

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Abstract

The invention relates to an arrangement for monitoring pressure within a battery cell, comprising: at least one battery cell, and at least one strain gauge for monitoring mechanical deformation of the battery cell. The invention also relates to a method of monitoring internal pressure of a battery cell, preferably by making use of such an arrangement.

Description

technical field [0001] The invention relates to a device for monitoring the internal pressure of a battery cell, comprising: at least one battery cell, and at least one strain gauge for monitoring mechanical deformation of said battery cell. The invention also relates to a method of monitoring the internal pressure of a battery cell. Background technique [0002] In the field of battery technology, efforts are being made to improve techniques for measuring battery parameters. The battery monitoring system measures and collects the status of the battery and displays the results. The battery management system controls the charging period and partly the discharging period based on the measurement results. These measurements are often parameters of a mathematical model describing the state of the battery. These models form the basis for the control program of the microprocessor-based battery monitoring and management system. [0003] Important physical values ​​that should b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H01M10/48
CPCY02E60/12H01M10/482H01M10/445H01M10/448H01M10/425H01M10/48Y02E60/10
Inventor P·诺滕G·黑岑多夫K·里姆施奈德
Owner KONINKLIJKE PHILIPS ELECTRONICS NV