A composite pulse lead-acid battery charger and its charging method

Abstract

The invention discloses a composite pulse lead-acid storage battery charger, which comprises a rectifier, a power switch circuit, a transformer, an analog-digital converter, a single chip microcomputer, a temperature detection circuit, a photoelectric coupler and a PWM. A battery is charged by using the charger; and the process of generating a composite pulse signal in a charging process is (1) charging by a high-frequency pulse sleeved with a slow pulse, wherein the stage is the charging process and comprises multi-sawtooth wave charging, each sawtooth wave is one cycle and a small sawtooth wave of which the frequency is 50-65KHz is also embedded into each large sawtooth wave; and (2) composite positive and negative pulse charging, which comprises a pre-stage charging process and a later stage charging process of composite positive and negative pulse charging, wherein the pre-stage charging process and the later stage charging process comprise positive pulse charging, zero pulse parking and negative pulse discharging; and the slow pulse is embedded into a positive pulse and a negative pulse. The gas evolution and water loss phenomena are avoided in the charging process; the charging rate is high; the temperature rise is low; and the service life of a rechargeable battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a composite pulse lead-acid battery charger and a charging method thereof. Background technique [0002] As an energy transfer device or backup power supply, lead-acid batteries are widely used in various electric locomotives, electric bicycles and automation equipment. Ordinary charging methods need to spare other batteries due to the long charging time. The charging process of the battery has a great influence on the charging time and life of the lead-acid battery. Most of the batteries are not damaged by use, but are damaged by charging. [0003] The charging methods of existing chargers usually include constant current charging, constant voltage charging, improved constant voltage charging, stage charging and positive and negative pulse charging. [0004] Constant current charging method: adjust the output voltage of the charging device or change the...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned problems in the prior art, the present invention provides a composite pulse lead-acid battery charger and its charging method, which can effectively solve the phenomenon of gassing and water loss during the charging process in the prior art, and the charging speed is slow. , temperature rise, rechargeable battery life is short and other issues

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