Constant pressure impulse quick charge method

A fast-pulse, zero-pulse technology, used in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of lower current efficiency charging efficiency, unavoidable overcharge, high temperature rise, etc., and achieve high charging efficiency , The effect of short charging time and simple operation

Inactive Publication Date: 2009-04-08
PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantage of the current fast charging method is that the charging current provided does not match the capacity of the battery, the charging time is longer, and it is impossible to accurately judge when the power is sufficient and the charging is interrupted, so overcharging cannot b...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Define initial charging current 1C, negative pulse discharge current 2C, pulse period 120S, of which positive pulse charging time is 119s, zero pulse stop charging 500ms, negative pulse discharge 50ms, zero pulse parking 450ms, charging test is carried out in a standard laboratory environment, The total charging time for full charging (checking and stopping charging) is 3 hours. The specific gravity of the electrolyte of the battery is measured, and the battery is already fully charged.

Embodiment 2

[0032] Adjust zero-pulse stop charging to 700ms, negative pulse discharge for 50ms, and zero-pulse parking for 250ms. Other conditions are the same as in Example 1. The total charging time for full charge (detection stop charging) is 3 hours. The temperature rise is very small, and there is little gas evolution.

Embodiment 3

[0034] Adjust zero-pulse stop charging to 600ms, negative pulse discharge 100ms, zero-pulse parking 300ms, other conditions are the same as in Example 1, the total charging time for full charge (detection stop charging) is 3h, and the specific gravity of the battery electrolyte is measured. The temperature rise is very small, and there is little gas evolution.

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PUM

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Abstract

The invention discloses a constant voltage impulse rapid charging method which charges a storage battery by using constant charging voltage and charging impulse with constant cycle; the charge current curve in each charging cycle includes four stages which are positive impulse charge, zero impulse charge stop, negative impulsive discharge and zero impulse discharge stop, wherein, the initial current amplitude value of the positive impulse charge is 1C and takes on index movement along with the charge time, and the current amplitude of the negative impulsive discharge is 2C all the time. The constant voltage impulse rapid charging integrates the advantages of constant voltage charge and pulse current charge into a whole, charges by using heavy current with the constant voltage and adopts depolarized measures such as instant discharge, charge stop and the like to form periodical charging impulse to lead the storage battery to be close to the initial charging state; the method is characterized by short charge time, high charging efficiency, low temperature rise, little gassing, simple operation and the like, and is suitable for charging various types of lead acid storage batteries.

Description

technical field [0001] The invention relates to a battery charging method, in particular to a constant voltage pulse fast charging method. Background technique [0002] With the development of modern science and technology, more and more batteries are used in communication, transportation and other fields. Research on technologies related to batteries can improve the charging and energy storage efficiency of batteries, save limited energy, and increase the service life of batteries. important issues in the field. [0003] At present, the current charging technology at home and abroad generally stipulates that the charging current shall not exceed 0.1C (C is the rated capacity of the battery), that is, charging at a rate of 10 hours, and the charging time is as long as 14 hours or more. Obviously, the charging time of this charging method is very long, and it cannot meet the requirements for areas with frequent power outages or emergency charging. Therefore, a fast charging...

Claims

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Application Information

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IPC IPC(8): H01M10/44
CPCY02E60/12Y02E60/10
Inventor 贾英江傅孝忠戴祥军王长龙王平宣兆龙安振涛武洪文
Owner PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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