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Storage battery charge and discharge curve sampling system and method

A charge-discharge curve and sampling system technology, which is applied in the field of battery charge-discharge curve sampling system, can solve problems such as inability to detect battery voltage fluctuation curves in detail, and achieve high efficiency and focused effects

Inactive Publication Date: 2017-02-15
曹县中泰纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the battery discharge voltage value or the voltage fluctuation curve in the process of rapid drop in the current value cannot be detected in detail during the sampling process of the battery charge and discharge curve of the electric vehicle in actual use, the first purpose of the present invention is to propose a battery charge and discharge curve sampling system, the second purpose It is to propose a battery charging and discharging curve sampling method based on the above system, the specific scheme is as follows:

Method used

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  • Storage battery charge and discharge curve sampling system and method

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Embodiment Construction

[0055] The first object of the present invention is to provide a storage battery charge and discharge curve sampling system that can focus on sampling the current value and voltage value in the fluctuating section of the battery discharge curve, and the second object is to propose a storage battery charge and discharge curve sampling method based on the above system.

[0056] The present invention will be further described in detail below with reference to the examples and figures, but the embodiments of the present invention are not limited thereto.

[0057] The charge and discharge curve of the battery is very important for testing and evaluating the performance of the battery. The capacity, charge and discharge time of the battery, and the stability of the output voltage or current can all be well reflected in it. Due to the non-linear charging and discharging curve of the battery, the voltage will drop sharply when the battery is about to run out, and the voltage fluctuatio...

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Abstract

The invention discloses a storage battery charge and discharge curve sampling system comprising a test load unit which is used for providing different resistance values at different times; a control unit which controls the connection state of the test load unit and a storage battery; a sampling unit; an automatic storage unit; and an automatic tracking unit which automatically detects the change of the current value and the voltage value in a sampling curve and adjusts the sampling frequency to focus on sampling of current and voltage fluctuation periods. Compared with the systems and the methods in the prior art, random sampling sites are inserted in the sampling process for detecting drastic fluctuation of the sampling curve in the sampling process, and the sampling frequency is increased for the curve of drastic fluctuation so that the storage battery charge and discharge curve can be recorded in a detailed way, high frequency sampling is adopted in the key curve periods, low frequency sampling is adopted in the normal periods, and thus sampling resources like storage space and sampling time can be effectively and reasonably allocated, the key periods can be focused and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of electrochemical battery capacity detection, more specifically, it relates to a storage battery charging and discharging curve sampling system and method. Background technique [0002] Because electric vehicles are clean, environmentally friendly and non-polluting, they are used more and more in people's daily life, especially for some electric bicycles. Existing batteries for electric vehicles generally use lithium batteries. For the performance of electric vehicles, the performance of the battery plays a key role. The performance of the battery is mainly obtained from the analysis of the charge and discharge curve of the battery, such as the capacity of the battery, the output power of the discharge, and the duration of the discharge. Since the discharge time of the battery is relatively long, it usually lasts for several hours to more than ten hours. It is obviously time-consuming and labor-intensive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3644G01R31/385
Inventor 高富强徐云虎
Owner 曹县中泰纺织有限公司
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