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Cell tester

A technology of battery tester and test signal, which is applied in multi-tester circuits, instruments, measuring electricity and other directions, can solve the problems of cumbersome measurement and measurement process, and achieve the effect of avoiding breakdown and reducing frequency.

Inactive Publication Date: 2014-04-09
FLUKE PRECISION MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the existing battery internal resistance measurement equipment cannot measure the high voltage across the battery pack, testers often need to use two test equipment, one of which is used to measure the internal resistance of the battery, and the other is used to measure the entire battery pack High voltage at both ends, which makes the measurement process more cumbersome

Method used

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Embodiment Construction

[0028] The accompanying drawings, which are incorporated in and constitute a part of this document, are cited in the following detailed description. The illustrative embodiments described in the detailed description, drawings, and claims are not intended to be limiting. Other embodiments can also be utilized and other changes can be made without departing from the spirit and scope of the application. It should be understood that the various aspects of the application described and illustrated herein can be arranged, substituted, combined, separated and designed in many different configurations, all of which are implicitly included herein.

[0029] Hereinafter, in order to describe specific embodiments clearly, some specific terms will be used. However, the intention of adopting these terms is not to limit the scope of protection of the present application, and the scope of these terms should be extended to any equivalent replacement that uses substantially the same means to a...

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Abstract

The application relates to a cell tester that is capable of carrying out internal resistance measurement and voltage measurement of the cell through the same input channel. When the internal resistance measurement of the cell is carried out, a testing signal loop of the cell tester is electrically connected to two electrodes of a to-be-tested cell, thereby transmitting a testing signal for cell internal resistance measurement. A response sensing loop of the cell tester is also electrically connected to the two electrodes of the to-be-tested cell so as to detect response signals of the two electrodes of the to-be-tested cell. An internal resistance measurement apparatus is electrically connected to the response sensing loop, thereby carrying out cell internal resistance measurement based on the response signals detected by the response sensing loop. In addition, the cell tester also includes a breaking apparatus. When cell internal resistance measurement is not carried out and, for example, under the circumstances that the voltage of the cell group is measured for example, the breaking apparatus enables the to-be-tested cell to be disconnected from the testing signal loop and the internal resistance measurement apparatus to be disconnected from the response sensing loop. Meanwhile, the cell tester also can be used for providing automatic protection for the cell internal resistance measurement element.

Description

technical field [0001] The present application relates to a battery tester, and more specifically, the present application relates to a battery tester capable of measuring the internal resistance of a battery. Background technique [0002] Batteries are widely used in industrial production, transportation, communication and other fields of power supply. In order to detect battery failure or insufficient capacity in advance and avoid potential accidents caused by it, it is necessary to conduct a comprehensive test on the operating parameters of the battery. Usually, the working state of the battery can be evaluated by measuring its internal resistance. Common methods for measuring battery resistance include density method, open circuit voltage method, DC discharge method and AC injection method. [0003] For an uninterruptible power supply system (UPS), the voltage of the battery pack is usually between 400V and 600V, while the existing battery internal resistance measuring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/08G01R27/14
CPCH02H3/08H02H3/20G01R31/3627G01R31/3606G01R1/36G01R15/12G01R27/16G01R31/385G01R31/389G01R31/3648G01R31/382G01R31/3842
Inventor 范松南
Owner FLUKE PRECISION MEASUREMENT