Storage battery internal resistance flash measurement device and method
A battery and internal resistance technology, which is applied in the field of battery internal resistance flash measurement devices, can solve the problems of distortion of collected data, small voltage changes, affecting the authenticity and accuracy of internal resistance, and achieves high accuracy and reliability. The effect of fast speed and improved measurement accuracy
Inactive Publication Date: 2021-10-01
郑州易能科技有限公司
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Problems solved by technology
However, due to the characteristics of the internal components of the battery and the small voltage change during low-current discharge, the collected data may be distorted during one discharge, which will affect the authenticity and accuracy of the internal resistance measured by the DC low-current discharge method
It can be seen that the reliability and accuracy of the current method of measuring the internal resistance of the battery needs to be improved under the premise of ensuring the reduction of battery damage.
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0024] It should also be understood that the terminology used ...
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The invention discloses a storage battery internal resistance flash measurement device and method. The device comprises: a discharge module used for discharging a storage battery; a synchronous sampling control module which is used for controlling synchronization of voltage sampling and discharge current sampling by adopting a synchronous signal; an acquisition module which detects the voltage of a single body and the charging and discharging current of a battery pack under a normal condition, and the acquisition discharging module acquires discharging data including the discharging current, the discharging voltage and the temperature of the storage battery when the internal resistance of the storage battery is tested, and sends the discharging data to the data processing module; a data processing module which is used for analyzing the discharge data, calculating the internal resistance of the storage battery, judging whether the voltage of the storage battery is under-voltage, whether the internal resistance is over-limit and whether the temperature of the storage battery is over-high, and obtaining state information of the storage battery; and a display module which is used for displaying the state information of the storage battery. The device adopts a synchronous signal to control synchronization of voltage sampling and discharge current sampling, so that the measurement precision is improved, the internal resistance of the storage battery is detected quickly, and the accuracy and the reliability are high.
Description
technical field [0001] The invention relates to the technical field of energy storage battery management, in particular to a battery internal resistance flash test device and method. Background technique [0002] As the backup power supply of the power supply system, the battery has been widely used in communication, banking, power supply, transportation, finance and other fields. Its health and stability directly affect the stability and safety of key systems in these fields. Since the internal resistance of the battery is closely related to its own capacity, the most important and most reflective of the current state of the battery is the internal resistance of the battery. [0003] At present, the methods of measuring battery internal resistance that have been applied include DC high current discharge method, AC injection method and DC small current discharge method. The DC high current discharge method generally can measure the relatively accurate internal resistance af...
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IPC IPC(8): G01R31/389G01R31/396
CPCG01R31/389G01R31/396
Inventor 唐德李志军郝利强李纪宾王魁
Owner 郑州易能科技有限公司