Protective device for on-line discharge capacity test of storage battery and testing method thereof

A battery pack and security device technology, which is applied in battery circuit devices, measuring devices, circuit devices, etc., can solve problems such as substation danger and DC system voltage loss in the whole station, and achieve effective security measures, huge social benefits, and intuitive working status Effect

Active Publication Date: 2010-06-30
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, without the protection of safety measures, it is very dangerous for a substation with only one set of batteries, and it is very easy to artificially cause serious consequences of voltage loss in the DC system.

Method used

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  • Protective device for on-line discharge capacity test of storage battery and testing method thereof
  • Protective device for on-line discharge capacity test of storage battery and testing method thereof
  • Protective device for on-line discharge capacity test of storage battery and testing method thereof

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Experimental program
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Embodiment Construction

[0020] figure 1 As shown, the present invention includes a storage battery pack U1, the positive electrode of U1 is connected in series with fuses F1 and F2 in series and then connected to one end of a DC regular load RL1, the negative electrode of U1 is connected in series with fuses F3 and F4 in series and then connected to the other end of RL1, charging The positive pole of device J1 is connected in series with DC circuit breaker SW1 and then connected to the node of fuse F1 and fuse F2, and the negative pole of charging device J1 is connected in series with DC circuit breaker SW2 and then connected to the node of fuse F3 and fuse F4; The positive poles of power diodes D2 and D4 are connected to the positive pole of U1, and the negative poles of D2 and D4 are connected to the junction of fuse F1 and fuse F2; the discharge characteristic tester RL is connected in parallel with the battery pack U1, and a pair of relay JDQ1 is normally closed The contact is connected to the po...

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Abstract

The invention relates to a protective device for an on-line discharge capacity test of a storage battery and a testing method thereof. The protective device mainly consists of two high power diodes and an acoustooptical alarm circuit, wherein the two high power diodes are connected on an outlet fuse in parallel; the acoustooptical alarm circuit mainly comprises a comparator, a relay, an electric bell, an LED and the like. When being normal in a DC power supply system, the storage battery of a transformer substation is in a float charging state; and when a charging device stops working, the storage battery can automatically and continuously supply power for a DC load. Meanwhile, the invention discloses a method for on-line testing the discharge capacity of the storage battery by adopting the protective device. The invention is safe and reliable in the on-line monitoring function for the storage battery, thus avoiding the accident risk to some extent.

Description

technical field [0001] The invention relates to a security device connected to a valve-controlled sealed lead-acid battery pack used in electric power engineering without offline discharge testing, specifically, a battery pack that can automatically and uninterruptedly supply power to DC loads when the charging device stops working discharge safety device. Background technique [0002] Valve-regulated sealed lead-acid battery packs need to pass a check discharge test to test and evaluate the actual capacity of the battery. The usual method is: the battery pack is connected to the "manual discharge load", and the current value of 0.1C10 is used for constant current discharge and timed. When the terminal voltage of any battery in the battery pack reaches the end-of-discharge voltage, the discharge is stopped, and the discharge current value is the same as The product of discharge time is the actual capacity of the battery under test. In the usual test method, the battery pac...

Claims

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Application Information

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IPC IPC(8): H02J9/06H02J7/00G01R31/36
Inventor 李晶陈贤顺胡灿丁丹一曹永兴
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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