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Quick-charging circuit of solar lead-acid storage battery

A solar lead-acid and fast charging technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of the promotion of large-scale photovoltaic power stations and other problems, and achieve the effect of fast charging speed, small damage and small loss.

Inactive Publication Date: 2013-04-03
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of light conditions, the grid-connected operation of photovoltaic power generation has encountered many problems, which has restricted the promotion of large-scale photovoltaic power stations.

Method used

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  • Quick-charging circuit of solar lead-acid storage battery
  • Quick-charging circuit of solar lead-acid storage battery
  • Quick-charging circuit of solar lead-acid storage battery

Examples

Experimental program
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Embodiment Construction

[0015] Such as figure 1 As shown in the circuit diagram of photovoltaic panel power supply and mains power supply, the input part of the solar lead-acid battery fast charging circuit is divided into two parts: the solar panel and the transformer rectifier circuit. The output of the input part passes through the voltage stabilization module. The voltage stabilization module includes two stages of voltage regulation. The first stage stabilizes the output voltage of the first part at the required voltage through the power regulator chip LM2576. According to the capacity of the lead-acid battery, LM2576 can be selected for multi-stage parallel connection. Ensure stable power supply; the second stage uses LM7805 to convert the output voltage of the first stage to 5V, which supplies power for the smart chip BQ2031.

[0016] Such as figure 2 The charging control circuit shown in the figure, the core chip is BQ2031 produced by TI Company, the chip can choose three ways of second-ord...

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Abstract

The invention relates to a quick-charging circuit of a solar lead-acid storage battery. The quick-charging circuit comprises an input portion, a voltage stabilization module, a charging control circuit, a main charging circuit and a charging mode selection and indicating lamp circuit, wherein the input portion comprises a solar panel and a transformer rectifier circuit, a mains supply is connected with the transformer rectifier circuit and the selection switch for output, output of the input portion is connected with a voltage stabilization circuit, output of the voltage stabilization circuit is connected with the main charging circuit, the charging mode selection and indicating lamp circuit is connected with the charging control circuit and transmits a charging selection mode into a core chip of the charging control circuit, the core chip outputs pulse-width modulation (PWM) control signals to the main charging circuit to control charging, and the main charging circuit outputs to the lead-acid storage battery for charging. The lead-acid storage battery can be charged quickly and protected through solar energy or the mains supply, three charging modes such as second-order voltage, second-order current and pulses can be selected, the charging speed is fast, the loss is low, and the service life of the lead-acid storage battery can be effectively prolonged.

Description

technical field [0001] The invention relates to a battery charging circuit, in particular to a solar lead-acid battery fast charging circuit. Background technique [0002] In the context of increasingly scarce fossil energy, new energy has been widely used. As a clean and pollution-free energy source, solar energy is gradually being promoted. How to apply the inexhaustible solar energy to real life has become a major topic in current research. However, due to the limitation of light conditions, the grid-connected operation of photovoltaic power generation has encountered many problems, which restricts the promotion of large-scale photovoltaic power stations. [0003] Lead-acid batteries are widely used because of their low manufacturing cost, large capacity and low price. With the development of lead-acid battery charging theory, the rapid charging theory has been gradually improved, making it possible to maximize the use of limited solar energy for fast charging of lead-...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 程启明李明王鹤霖陈根吴凯张海清
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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