Charging method and device of elevator lithium battery emergency device

Abstract

The embodiment of the invention discloses a charging method and device of an elevator lithium battery emergency device. The method comprises the following steps of detecting the electrical quantity of a lithium battery pack by a battery management system; monitoring a first ambient temperature in a battery box by a temperature sensor when the electrical quantity of the lithium battery pack is lower than a charging electrical quantity threshold value; heating the battery box by a heating layer in the battery box when the first ambient temperature is detected to be lower than the preset temperature threshold value; monitoring a second ambient temperature in the battery box by the temperature sensor during the heating process; and starting a mains support to charge the lithium battery pack in the lithium battery emergency device when the second ambient temperature is judged to exceed the preset first temperature threshold value. In the charging method and device disclosed by the embodiment of the invention, the whole charging ambient temperature is controlled to be 0-40 DEG C, the safety and the charging reasonableness of the whole charging process are also guaranteed.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a method and a device for charging an elevator lithium battery emergency device. Background technique [0002] At present, China is vigorously promoting the integrated construction of cities and towns to promote the development of high-rise construction, which greatly stimulates the vigorous growth of the elevator industry. Elevators bring efficient and convenient services to people's lives. Therefore, elevators have become an important part of public transportation. It plays an important role in high-rise buildings. With efficient transportation function. With the rapid development of my country's social economy, it will continue to develop steadily. As of 2015, the number of elevators in China has exceeded 4 million, and the annual growth rate of elevators is 20%. 75% of the world is basically China. Manufacturing, therefore, the elevator industry itself is tailor-made accord...

AI Technical Summary

Problems solved by technology

When the elevator emergency equipment is outdoors or there is no auxiliary heating equipment indoors, in a cold environment, charging the lithium battery at low temperature will affect the life of the battery, and it is difficult to replenish the rated capacity when charging at low temperature. The use in the cold environment in the north will cause the loss of lithium battery life

The ambient temperature range for existing lithium batteries to be charged is from 0°C to 40°C. The lower the ambient temperature, the slower the charging of lithium batteries, but it is very safe, but the high temperature will lead to fast charging, and the battery will heat up and be easily damaged.

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