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Lead storage battery accelerated life detection method

A lead-acid battery, life-accelerating technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low detection efficiency, inconsistent battery usage, long time consumption, etc., to achieve real data, reduce detection costs and energy. The effect of consumption and shortening of detection time

Active Publication Date: 2014-12-24
ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection efficiency of this method is low, and the time-consuming is too long, ranging from 3 to 5 months to 8 to 12 months. At the same time, this detection method is also inconsistent with the actual use of the battery, and cannot truly reflect the actual use of the battery.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 2hr rate capacity detection: the battery is in an environment with a temperature of 25°C±2°C, with a terminal voltage of 2.50V±0.10V / cell (current limit 0.6 I 2 A) After continuous charging at a constant voltage for 20 hours, let it stand for 1~24 hours. When the surface temperature of the battery is stable at 25°C±5°C, I 2 (A) The current is continuously discharged until the terminal voltage drops to 1.75V / cell, and the actual discharge capacity of the battery is calculated from the discharge time and discharge current, and the average value of the three cycles is recorded as the actual capacity of the battery C 2 ;

[0026] (2) High temperature detection: place the fully charged battery in a constant environment with the ambient temperature set at 70°C±2°C for 10 hours until the surface temperature of the battery is the same as the ambient temperature, the setting procedure is 0.3 I 2 Constant current discharge to 20% C 2 , after standing for 30min, with a...

Embodiment 2

[0031] (1) 2hr rate capacity detection: the battery is in an environment with a temperature of 25°C±2°C, with a terminal voltage of 2.50V±0.10V / cell (current limit 0.6 I 2 A) After continuous charging at a constant voltage for 20 hours, let it stand for 1~24 hours. When the surface temperature of the battery is stable at 25°C±5°C, I 2 (A) The current is continuously discharged until the terminal voltage drops to 1.75V / cell, and the actual discharge capacity of the battery is calculated from the discharge time and discharge current, and the average value of the three cycles is recorded as the actual capacity of the battery C 2 ;

[0032] (2) High temperature detection: Place the fully charged battery in a constant environment with the ambient temperature set at 66°C±2°C for 15 hours until the surface temperature of the battery is the same as the ambient temperature. I 2 Constant current discharge to 20% C 2 , after standing for 30min, limit the voltage to 2.5V / cell (cur...

Embodiment 3

[0037] (1) 2hr rate capacity detection: the battery is in an environment with a temperature of 25°C±2°C, with a terminal voltage of 2.50V±0.10V / cell (current limit 0.6 I 2 A) After continuous charging at a constant voltage for 20 hours, let it stand for 1~24 hours. When the surface temperature of the battery is stable at 25°C±5°C, I 2 (A) The current is continuously discharged until the terminal voltage drops to 1.75V / cell, and the actual discharge capacity of the battery is calculated from the discharge time and discharge current, and the average value of the three cycles is recorded as the actual capacity of the battery C 2 ;

[0038] (2) High temperature detection: Place the fully charged battery in a constant environment with the ambient temperature set at 40°C±2°C for 20 hours until the surface temperature of the battery is the same as the ambient temperature. The setting procedure is 0.8 I 2 Constant current discharge to 20% C 2 , after standing for 30min, with a...

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Abstract

The invention discloses a lead storage battery accelerated life detection method. According to the method, a lead storage battery is subjected to high-temperature environmental detection, and a pulse is added in the detection process, so that a detected result is approximate to a result of a 100% DOD life test at the normal temperature, and the cycle life of the lead-acid storage battery can be tested and estimated more quickly; the whole detection period is about 2-4 months, the detection time is remarkably shortened, data are true, the performance of the battery can be evaluated, and the speed of researching and developing new technologies and new products by an enterprise or a research and development unit can be remarkably increased.

Description

technical field [0001] The invention relates to the field of storage battery production, in particular to a method for detecting the accelerated life of a lead storage battery. Background technique [0002] The main power source of electric vehicles today is batteries, and lead-acid batteries are the most widely used batteries covering the most fields, and their performance is particularly important. The cycle life is an important indicator for evaluating the performance of lead-acid batteries. How to accurately and quickly detect the battery cycle life is of great significance to the analysis and evaluation of battery characteristics. [0003] The circulation method of the existing lead-acid battery specified in GB / T22199-2008 "Sealed Lead-acid Battery for Electric Bicycles" implemented by the country on April 1, 2009 is: after the battery is fully charged, the temperature is 25 ° C ± 5 ° C 1.0 in the environment I 2 Current discharge for 1.6h, and then with a constant ...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 张慧方明学张丽芳王斌
Owner ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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