Method and device for controlling multiple safety protection and energy-saving charging

Abstract

The invention discloses a method for controlling multiple safety protection and energy-saving charging. In the method, three grades of controllable switches are arranged on the front part, on the middle part and on the rear part of a charging system; simultaneously, a battery management circuit (BMS) is embedded into the charging system; the battery state and the charging operation are used as controlled objects; when the battery and a charging state accord with the requirement, the battery is charged; and when the battery state is abnormal, the charging stopping operation is realized sequentially by firstly cutting off the middle controllable switch to make the charging system in an underloading state, and secondarily cutting off the front switch and the rear switch to avoid damages to contacts caused by an arc discharge phenomenon generated by a heavy-load high current on the contacts so that the service life of the contacts is prolonged. The invention also provides a device for implementing the method. The device can realize an energy-saving and protection control technology of input zero power consumption in a high power charging standby state and output zero voltage at a charging port.

Description

A control method and device for multiple safety protection and energy-saving charging technical field The invention belongs to the field of electronic circuits, and in particular relates to a control method and device for multiple safety protection and energy-saving charging. Background technique The safe voltage stipulated by international electrical safety standards should be lower than or equal to 42V. However, many fields require a battery pack above 42V to meet the power demand. The charging port is exposed during charging and standby, and it is inevitable to come into contact with the human body. At this time, measures must be taken to prevent safety accidents caused by electric shocks that exceed safety standards. The target battery for high-power charging is expensive, and there are explosive safety hazards. There are often battery explosion accidents due to insufficient charging control and protection. Moreover, the high-power charging system consumes a lot of rea...

AI Technical Summary

Problems solved by technology

Many fields require a battery pack above 42V to meet the power demand. When charging and standby, the charging port is exposed, and it is inevitable to come into contact with the human body. At this time, measures must be taken to prevent safety accidents caused by electric shocks and injuries caused by voltages exceeding safety regulations.

The target battery for high-power charging is expensive, and there are explosive safety hazards. There are often battery explosion accidents due to insufficient charging control protection, and the high-power charging system consumes a lot of reactive power and has a long standby time, and its energy-saving problems are prominent.

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