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Pulse quick charging method and system for accumulator

A technology of fast pulse and charging method, which is applied in the charging/discharging of secondary batteries, battery circuit devices, and charging equipment through energy saving, etc., can solve the problems of insignificant depolarization effect, prolonged charging time, and low charging efficiency, etc. , to eliminate the phenomenon of charging polarization, improve the charging speed, and avoid insufficient charging.

Inactive Publication Date: 2007-10-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the same way, due to intermittent charging for a period of time, the charging time is still very long, and the depolarization process here is also carried out naturally, so the depolarization effect is not obvious, and the duration of the pulse unit is gradually shortened, which further extends the charge time
[0008] It can be seen that the above charging methods generally have the problems of long charging time and low charging efficiency. In this way, in areas with frequent power outages and harsh grid environments, it is easy to cause insufficient charging of the battery, which will cause the battery to fail due to sulfation. cause serious economic losses

Method used

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  • Pulse quick charging method and system for accumulator
  • Pulse quick charging method and system for accumulator
  • Pulse quick charging method and system for accumulator

Examples

Experimental program
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Effect test

Embodiment 1

[0062] Embodiment 1: Taking the common valve-controlled sealed lead-acid VRLA battery as an example, before the battery is charged, according to the state before the battery is charged, various parameter values ​​can be set in the setting unit 15, including constant charging current Ia, pulse Discharge current Ib, charge threshold voltage, discharge threshold voltage and specified temperature are initially set respectively, wherein charge current Ia=maximum charge current of VRLA battery; pulse discharge current Ib=Ia; charge threshold voltage is the gassing voltage of VRLA battery; discharge The threshold voltage is the pre-set end voltage of VRLA battery pulse discharge, the voltage = 1.00V / cell; the specified temperature is generally lower than the temperature of the battery under normal protection, 53°C is taken in this embodiment.

[0063] As shown in Figure 8, it is the process of pulse fast charging: at the initial stage of charging, the battery is charged with a constan...

Embodiment 2

[0066] Embodiment 2: Still taking the common valve-controlled sealed lead-acid VRLA battery as an example, before charging the battery, each parameter value can be set in the setting unit 15, wherein the charging current Ia 1.00V / cell ; The specified temperature is generally lower than the temperature under normal protection of the battery, and 45° C. is taken in this embodiment.

[0067] As shown in Figure 8, it is the process of pulse fast charging: at the initial stage of charging, the battery is charged with a constant current by the constant current charging unit 11 with the current of Ia, and in the charging process, the battery charging voltage is detected by the detection and monitoring unit 13, when When the charging voltage of the storage battery reaches the charging threshold voltage, the system switches to the discharge state, and the control unit 14 controls the pulse discharge unit 12 to perform a pulse discharge operation on the storage battery, and the pulse dis...

Embodiment 3

[0070] Embodiment 3: Still taking the common valve-controlled sealed lead-acid VRLA battery as an example, before charging the battery, each parameter value can be set in the setting unit 15, wherein the charging current Ia Ia, and Ib≤the maximum discharge current of the battery; the charge threshold voltage is the gassing voltage of the VRLA battery; the discharge threshold voltage is the preset end voltage of the VRLA battery pulse discharge, and the voltage>1.00V / cell ; The specified temperature is generally lower than the temperature under normal protection of the battery, and 45° C. is taken in this embodiment.

[0071] As shown in Figure 8, it is the process of pulse fast charging: at the initial stage of charging, the battery is charged with a constant current by the constant current charging unit 11 with the current of Ia, and in the charging process, the battery charging voltage is detected by the detection and monitoring unit 13, when When the charging voltage of the ...

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Abstract

The method includes following steps: in procedure for charging accumulator in constant electrical current, pulse current is added in good time to carry out discharge; monitoring variety of charging and discharging time values to determine state of charging accumulator; controlling quick pulse charging operation for accumulator based on charging state. Eliminating polarization phenomena quickly and effectively when charging accumulator, the invention increases speed and shortens charging time, and raises charging efficiency. Especially, the invention avoids undercharge from occurring in area, where environment of electric grid is execrable so as to prolong service life of accumulator.

Description

technical field [0001] The invention relates to the field of accumulators, in particular to a pulse fast charging method and a charging system for an accumulator. Background technique [0002] With the rapid development of mobile communication scale, there are more and more unattended outdoor base stations. However, in recent years, many operators have generally reported that there are major problems with batteries used in outdoor base stations. Take the commonly used valve-controlled sealed lead-acid VRLA battery as an example. For similar VRLA batteries from the same manufacturer, the service life of the battery for outdoor base stations is much lower than that of the battery for central office stations, which is far lower than the design life of the battery. For example, if the capacity is 2V The average service life of the batteries in the world is less than 3 years, and the average service life of the batteries with a capacity of 12V is less than 1 year. This has cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H02J7/00
CPCY02E70/40Y02E60/12Y02E60/10
Inventor 张立元秦真罗光王文广毕广春李海熊勇李磊
Owner HUAWEI TECH CO LTD
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