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Apparatus and method for online maintenance of valve regulated sealed lead acid storage battery

A lead-acid battery and maintenance device technology, which is applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of increased internal resistance of the battery, single maintenance method, and shortened backup power supply time, etc. The effect of high cut-off voltage

Inactive Publication Date: 2016-03-23
NANNING GUORUI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, most of the storage batteries are in the long-term floating charge state, only charging, not discharging, this working state is extremely unreasonable
A large number of operating statistics show that this will cause the anode plate of the battery to be passivated, the internal resistance of the battery will increase sharply, and the actual capacity (A.h) of the battery will be far lower than its standard capacity, resulting in the failure of the battery to provide. The actual backup power supply time is greatly shortened, reducing its service life
[0011] (4) Dehydration
[0018] (3) Positive plate corrosion
[0022] As mentioned above, the existing maintenance method is single, not highly targeted, does not provide different maintenance for specific battery problems, and cannot achieve online maintenance

Method used

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  • Apparatus and method for online maintenance of valve regulated sealed lead acid storage battery
  • Apparatus and method for online maintenance of valve regulated sealed lead acid storage battery
  • Apparatus and method for online maintenance of valve regulated sealed lead acid storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Lead-acid valve-regulated battery pack 2 (24 single batteries, rated voltage 2V, float charge upper limit 2.25V, equal charge upper limit 2.35V, cut-off voltage 1.8V, rated capacity 500Ah, CI is 10-hour rate discharge current 50A) online maintain:

[0083] 1) Start maintenance device 4, wiring as figure 1 As shown: PWM circuit 6, DC contactor 7, freewheeling protection module 8 and circuit breaker 9 are connected in parallel and then connected to the battery negative terminal; remote discharge control module 10 is connected to intelligent power supply 1.

[0084] 2) Sulfation repair of battery negative plate:

[0085] A1 intelligent module 3 limits the charging current to 10A through PWM circuit 6, and adjusts the equalizing charging voltage to 59.22V;

[0086] A2 charges the battery pack 2 for 10 hours;

[0087] A3 The intelligent module 3 disconnects the intelligent power supply 1 through the remote discharge control module 10, simulates an AC power failure, and di...

Embodiment 2

[0111] The difference from Embodiment 1 is that CI is the actual current 60A, and other principles are the same as Embodiment 1.

Embodiment 3

[0113] The difference from Example 1 is that the CI is a five-hour rate discharge current of 100A, and other principles are the same as in Example 1.

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Abstract

The present invention discloses an apparatus and a method for online maintenance of a valve regulated sealed lead acid storage battery. According to the present invention, the backward battery in the storage battery pack is repaired by using a semi-offline technology, cyclic charging, pulse charging, low current trickle charging and other ways; and with the method of the present invention, the storage battery can not depart from the online backup status, the backward storage battery is subjected to maintenance by using the charging device of the user and the loading, and the occurrence of the phenomenon that the severe overcharge is generated during the storage battery pack so as to cause the storage battery dehydration can be avoided by using the semi-offline mode so as to prolong the service life of the storage battery.

Description

technical field [0001] The invention belongs to the technical field of battery automatic maintenance, and in particular relates to an online maintenance device and method for a valve-controlled sealed lead-acid battery. Background technique [0002] Valve-regulated sealed lead-acid batteries are widely used in various industries, and most of them are used as a whole group. In this way, due to the performance difference of the batteries, the phenomenon of overcharging and undercharging will occur, which will cause some batteries to fail early and affect the performance of the battery pack. service life. [0003] Some of the reasons that affect battery life are: [0004] (1) Excessive charging and discharging: [0005] Overcharging will cause the battery to lose water and accelerate the corrosion and aging of the battery plate. [0006] The over-discharge of the battery is another important factor affecting the service life of the battery. The life of a battery depends o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/44
CPCY02E60/10
Inventor 韦红艺
Owner NANNING GUORUI ELECTRONICS TECH CO LTD
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