Portable storage battery pack voltage acquisition instrument

Abstract

The invention discloses a portable storage battery pack voltage acquisition instrument, relates to a battery pack detection device which is convenient to hold and move, in particular to a voltage measurement device for testing capacity of a battery pack. The voltage measurement device comprises a voltage stabilizing circuit, an isolation module, voltage acquisition modules and a central processingunit which are arranged in a box body, wherein a signal input end of each voltage acquisition module is separately connected with an anode and a cathode of a corresponding storage battery; an outputend of the voltage stabilizing circuit is respectively connected with a power supply end of the voltage acquisition module or the central processing unit by virtue of the isolation module; and a communication end of the voltage acquisition module is connected with a communication end of the central processing unit by virtue of a differential transmission bus. The invention provides a test instrument for acquiring the voltage of the transformer station storage battery pack, which is convenient to carry and high in practicability.

Description

technical field [0001] The invention relates to a battery pack testing device which is easy to hold and move, in particular to a voltage measuring device used for battery pack capacity testing. Background technique [0002] The capacity consistency of the batteries in the battery pack has a great influence on the overall life of the battery pack. In order to ensure the capacity consistency of the batteries in the battery pack, a full check discharge test should be carried out on the battery pack. This test requires each battery in the battery pack to be kept in series, and the battery pack is discharged as a whole with a discharge load connected in series to the discharge circuit, so as to ensure the consistency of the discharge current of each battery at any time, and the battery voltage after the discharge is terminated. battery capacity. [0003] In the full check discharge test, it is necessary to measure the voltage value of the single battery of the battery pack to en...

AI Technical Summary

Problems solved by technology

[0005] At present, when doing a full check discharge test for battery packs used in power systems, there are the following problems: 1. The process is cumbersome and the work efficiency is low, because every once in a while it is necessary to use a multimeter to measure and record the voltage of the single battery cells one by one. It takes about 20 minutes for 108 batteries, and the voltage measurement results are not suitable for horizontal comparison of each battery on the time axis; 2. There are safety risks, manual measurement requires frequent operation of metal probes, and the There may be a risk of short-circuiting the battery, resulting in damage to the battery or injury to the tester; 3. The data record is not conducive to analysis. The full-check discharge test needs to manually copy the test data, and then draw the test by comprehensively comparing it with the rated discharge curve of the battery. Conclusion, the transmission of paper documents is not conducive to the analysis of potential failures other than battery packs

However, due to installation space, cost and safety issues, most battery rooms cannot be installed

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