Detecting method for capacity of storage battery

A technology of capacity detection and storage battery, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of long time and complicated operation.

Active Publication Date: 2015-01-21
SOUTHEAST UNIV
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Problems solved by technology

The traditional detection method of battery capacity requires a discharge test of the battery, which is generally complicated and takes a long time

Method used

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  • Detecting method for capacity of storage battery
  • Detecting method for capacity of storage battery
  • Detecting method for capacity of storage battery

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Embodiment Construction

[0044] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0045] The flow process of the detection method of accumulator capacity of the present invention is as figure 1 Shown:

[0046] (1) Apply a pair of pulse current signals to the battery, and define several moments;

[0047] (2) Measure the voltage response and its first-order derivative generated by the double pulse current signal at different times;

[0048] (3) according to the measurement result in the step (2), utilize different formulas to calculate the electric potential of the power supply of the battery, the capacitance and the resistance on the pole plate of the battery;

[0049] (4) Calculate the battery capacity according to the results of the power supply electromotive force of the battery, the capacitance and the ...

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Abstract

The invention discloses a detecting method for the capacity of a storage battery. The method comprises the following steps: applying double-pulse current signals to the storage battery, measuring the voltage response and a first derivative generated by the double-pulse current signals at different moments, calculating the change of the electromotive force of the power source of the storage battery and the capacitance and the resistance on a pole plate of the battery plate by using different formulas, and further calculating the capacity of the storage battery. Through the method, the double-pulse current signals are applied to both terminals of the storage battery, the capacity of the storage battery can be detected without discharge of the storage battery, and through certification, the detected result is accurate and reliable.

Description

technical field [0001] The invention relates to a method for detecting the capacity of a storage battery, which can detect the capacity of the storage battery without discharging the storage battery. Background technique [0002] With the increasing shortage of energy and the increasingly severe environmental pollution, electric vehicles have become a hot spot in the research, development and application of the automotive industry due to their superior environmental protection and energy-saving characteristics. An important power component of an electric vehicle is the battery and its charging module, and its technical level has an extremely important impact on the development of the electric vehicle industry. [0003] As the mainstream battery of electric vehicles, the capacity of the battery itself has a very important influence on determining its charging strategy. Therefore, it is necessary to determine the battery capacity during its pre-charging phase. The traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 孙伟锋张太之付君宇刁龙钱钦松陆生礼时龙兴
Owner SOUTHEAST UNIV
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