Protection circuit adaptive to ship power supply voltage

Abstract

The invention discloses a protection circuit adaptive to ship power supply voltage, which belongs to the technical field of ship power supply control. The protection circuit adaptive to ship power supply voltage in the technical scheme adopted by the invention comprises a main control module, a charging module, a discharging module, a switching power supply module, a charging protection module, a current and voltage detection module, a communication module, a display module, a warning module, a charging interface and a discharging interface. The protection circuit adaptive to ship power supply voltage is applied to the ship field.

Description

technical field [0001] The invention relates to a protection circuit for adaptive ship power supply voltage, which belongs to the technical field of ship power supply control. Background technique [0002] The ship's power supply is the heart of the ship's power system. It generates electric energy to supply the entire ship's electrical equipment (load). As the main frequency of the CPU of the ship's equipment becomes higher and higher, the power consumption increases and the battery power consumption increases. Large, some equipment, especially after-installation equipment, still needs to be powered by batteries after the ship is turned off, such as GNSS ship-borne equipment. Scrapped early. [0003] Some existing equipment can realize low battery protection, but only for ships with different voltage systems, such as 12V version and 24V version, the 12V version can only work between 10-15V, and the 24V version can only work at 20V Between -28V, the low-voltage protection ...

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Problems solved by technology

[0002] The ship's power supply is the heart of the ship's power system. It generates electric energy to supply the entire ship's electrical equipment (load). As the main frequency of the CPU of the ship's equipment becomes higher and higher, the power consumption increases and the battery power consumption increases. Large, some equipment, especially after-installation equipment, still needs to be powered by batteries after the ship is turned off, such as GNSS ship-borne equipment. Early scrapping

[0003] Some existing equipment can realize low battery protection, but only for ships with different voltage systems, such as 12V version and 24V version, the 12V version can only work between 10-15V, and the 24V version can only work at 20V Between -28V, the low-voltage protection voltages are 10V and 20V respectively. Devices suitable for 12V cannot work in 24V systems, devices suitable for 24V cannot work in 12V systems, and some devices need to set different power systems through jumper switches. If the jumper switch is used to set the working voltage of the device, if the jumper is adjusted incorrectly, the purpose of protection will not be achieved. For example, the jumper of the device is set to 12V system, but it is connected to the 24V power supply. Since the shipboard equipment can work in a wide power supply voltage range , but its low battery protection is about 10V. If it is used for a long time, the 24V battery is discharged to 10V before protection, and the battery is basically scrapped.

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