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Preheating and charging method of valve-control type lead-acid storage battery capable of avoiding water loss in low-temperature charging

A lead-acid battery, charging method technology, applied in battery circuit devices, secondary battery charging/discharging, secondary battery repair/maintenance, etc. Effect

Active Publication Date: 2013-01-02
CHANGZHOU WUJIN HGPOWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] How to solve the problem of dehydration during charging at low temperature is a technical problem in this field

Method used

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  • Preheating and charging method of valve-control type lead-acid storage battery capable of avoiding water loss in low-temperature charging
  • Preheating and charging method of valve-control type lead-acid storage battery capable of avoiding water loss in low-temperature charging
  • Preheating and charging method of valve-control type lead-acid storage battery capable of avoiding water loss in low-temperature charging

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Experimental program
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Embodiment 1）

[0027] The preheating charging method of the valve-regulated lead-acid battery of the present embodiment comprises:

[0028] A: If the electrolyte in the battery is at a temperature of 25°C, the internal resistance of the battery is R T , when the real-time internal resistance R of the battery is measured at the initial stage of charging t ≤R T , that is, when the temperature of the electrolyte is not lower than 25°C, the battery is charged with a constant current, and the charging current is 0.1C; until the voltage of the battery reaches the gassing voltage value of the battery, the constant voltage Charging; when the voltage of the battery reaches the rated saturation voltage, it will be charged after a period of floating charging; the period of time is 1-24 hours, and the current of floating charging is 0.01-0.02C; because the floating charging current is small , Therefore, the float charge voltage is generally below the gassing point voltage of the battery.

[0029]Duri...

Embodiment 2）

[0045] See Figure 3-6 , the charging device applying the preheating charging method of the above-mentioned valve-regulated lead-acid storage battery, comprising: a rectification power supply circuit 1, a pulse power amplification and a transformer for providing charging power to the storage battery connected to the power supply output end of the rectification power supply circuit 1 Voltage circuit 4, charging sampling circuit 3 for detecting charging current and voltage, and charging control circuit 2 for controlling the output voltage of the pulse power amplification and voltage transformation circuit 4; charging control circuit 2 is suitable for sampling through the charging Calculate the real-time internal resistance R of the battery from the charging current measured in loop 3 and the fixed charging voltage t , according to R t with R T The size relationship of , using the corresponding charging steps in Example 1.

[0046] The input end of the rectification circuit 1 ...

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Abstract

The invention relates to a preheating and charging method of a valve-control type lead-acid storage battery capable of avoiding water loss in low-temperature charging. A device for realizing the method comprises a rectifying and power supplying circuit, a pulse power amplifying and transformation circuit, a charging and sampling loop and a charging control circuit, wherein the pulse power amplifying and transformation circuit is connected with the power output end of the rectifying and power supplying circuit and is used for providing charging power for the storage battery; the charging and sampling circuit is arranged between the output end of the pulse power amplifying and transformation circuit and the storage battery and is used for detecting charging current and voltage; and the charging control circuit is used for controlling the output voltage of the pulse power amplifying and transformation circuit, and calculating real-time internal resistance Rt by the charging current and voltage detected by the charging and sampling loop.

Description

[0001] This application is a divisional application, the application number of the original application: 2011100393596, the application date: 2011-2-16, and the name of the invention: a charging device for a valve-regulated lead-acid battery. technical field [0002] The invention relates to the technical field of battery charging, in particular to a preheating charging method for a valve-regulated lead-acid battery that can avoid water loss during low-temperature charging. Background technique [0003] A lead-acid battery is composed of multiple cells connected in series. The two most important factors for the premature end of life of valve-regulated lead-acid batteries are softening corrosion of the positive grid and excessive loss of water from the electrolyte. For the maintenance-free valve-regulated lead-acid battery, the capacity will be reduced by 20% if the water loss is 10%, and the life will be terminated if the water loss is 25%. Therefore, how to reduce the wate...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/00H02J7/04
CPCY02E60/12Y02E60/10
Inventor 杨龙兴
Owner CHANGZHOU WUJIN HGPOWER