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Storage battery internal resistance measuring method and system

A measurement method and technology of measurement system, which are applied in the field of battery internal resistance measurement method and system, can solve the problems of complex operation, poor measurement accuracy and high measurement cost, and achieve the effects of simplifying measurement method, reducing detection cost and high precision

Pending Publication Date: 2020-05-29
GUANGDONG INST OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is to provide a method for measuring battery internal resistance, which is simple and convenient, has low detection cost, has high accuracy and precision, and solves the problem of complicated operation and high measurement cost and poor measurement accuracy

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  • Storage battery internal resistance measuring method and system
  • Storage battery internal resistance measuring method and system

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Embodiment Construction

[0049] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0050] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this description, it indicates that there are Features, steps, operations, devices, components and / or combinations thereof.

[0051] Embodiments of the technical solution of the present invention will be described in detail b...

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Abstract

The invention relates to the field of battery internal resistance detection and particularly relates to a storage battery internal resistance measuring method and system. The storage battery internalresistance measuring method comprises steps of discharging a storage battery; cutting off and discharging, and collecting a first voltage value and a current value at two ends of the storage battery before the moment of cutting off and discharging, and a second voltage value at two ends of the storage battery after cutting off and discharging; and calculating internal resistance of the storage battery according to the voltage difference of the first voltage and the second voltage and the current value. The method is advantaged in that influence of the virtual voltage, electrochemical polarization resistance and concentration polarization resistance of the storage battery can be effectively avoided, the ohmic resistance in the battery can be accurately tested, and the method has high-accuracy, high-precision and high-interference-resistance measurement performance, the method simplifies a method for measuring the internal resistance of the storage battery, shortens the measurement time,reduces detection cost, and facilitates estimation of the capacity of the storage battery through the internal resistance.

Description

technical field [0001] The invention relates to the field of battery internal resistance detection, in particular to a battery internal resistance measurement method and system. Background technique [0002] A battery is a device that directly converts chemical energy into electrical energy. Its working principle is to use external electrical energy to regenerate internal active materials during charging, store electrical energy as chemical energy, and convert chemical energy into electrical energy output again when it needs to be discharged. Therefore, the battery is widely used in UPS uninterruptible power supply as a backup power supply. When a power failure occurs, the backup power supply must provide sufficient power to ensure power supply. [0003] The battery is an important part of the DC system, which determines the backup time of the system. After the battery is used online, its capacity performance will gradually degrade. The standard method to measure the batter...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/08G01R31/385G01R31/389
CPCG01R27/08G01R31/386G01R31/389
Inventor 蒋海锋万畅
Owner GUANGDONG INST OF SCI & TECH
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