Automatic power supply switching device

A switching device and automatic power supply technology, which is applied in the direction of circuit devices, emergency power supply arrangements, electrical components, etc., can solve problems such as poor reliability, achieve the effect of avoiding accidental disconnection, avoiding manual operation, and improving reliability
CN110198076AInactive Publication Date: 2019-09-03XINGTAI POWER SUPPLY +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XINGTAI POWER SUPPLY
Publication Date
2019-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is applicable to the technical field of automation control, and provides an automatic power supply switching device. The automatic power supply switching device comprises: a main power supply switching control circuit used for controlling the switching-in and switching-off of a main power supply; and a standby power supply switching control circuit used for controlling the switching-in and switching-off of the standby power supply. When the voltage of the main power supply is lower than a preset first voltage threshold value, the main power supply and the standby power supply aresimultaneously switched in through the main power supply switching control circuit and the standby power supply switching control circuit; when the sum of the voltage of the main power supply and thevoltage of the standby power supply is higher than a preset second voltage threshold value, the main power supply is switched in through the main power supply switching control circuit, and the standby power supply is switched off through the standby power supply switching control circuit. According to the automatic power supply switching device provided by the embodiment of the invention, the main power supply switching control circuit and the standby power supply switching control circuit are used for automatically controlling the main power supply and the standby power supply to be switched in and switched off, and the problem that an existing manual switching charging power supply is poor in reliability is solved.
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Description

technical field

[0001] The application belongs to the technical field of automatic control, and in particular relates to an automatic switching device for a power supply. Background technique

[0002] At present, the power supply of the DC charging system in the substation generally adopts 3 to 5 pieces of 300W intelligent charging modules, and manually changes the fixed and floating charging modes according to the changes of the battery voltage and current. However, if the charging module runs for a long time, its internal components will be overheated, damaged, and aged, which will easily lead to the failure of the DC module of the charger, causing multiple sets of protection abnormalities in the station, and posing a serious threat to the safe and reliable operation of the power grid. Contents of the invention

[0003] In view of this, an embodiment of the present application provides an automatic power switching device to solve the current problem of poor reliability i...

Claims

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