High current protection device

Abstract

The invention relates to a high-current protector and aims to solve the problems that instantaneous charge of a high-capacity electrolytic capacitor tends to cause a fire to a terminal, potential safety hazards can be caused, and the uneven lower surface of a lower terminal affects using of a product. According to the technical scheme, the high-current protector is characterized by comprising a control switch and a voltage-stabilizing chip. An input end of the voltage-stabilizing chip is connected with an input power source through the control switch. The high-current protector further comprises a delay control chip, a control circuit, a contactor circuit and a capacitor bank circuit. An input end of the delay control chip is connected with an output end of the voltage-stabilizing chip. An output end of the delay control chip is connected with an input end of the control circuit. A control end of the control circuit is connected with a control end of the contactor circuit. An input end of the contactor circuit is connected with the input power source. An output end of the contactor circuit is connected with an input end of a high-power inverter or high-power load through the capacitor bank circuit. The high-current protector is available for arc protection for high-power inverters or high-power loads.

Description

technical field [0001] The invention relates to a circuit protection device, in particular to a high-current protection device for high-power inverter or high-power load arc protection. Background technique [0002] The input terminals of inverters at home and abroad all use the mode of connecting wires and terminals with different cross-sectional areas according to the current size. The advantages of this mode are low cost and low cost, but the disadvantages are also very obvious. As the current increases, although the cross-sectional area of ​​the wire is increased, there are two fatal flaws that cannot be solved. One is that if the user connects the wrong polarity when using it, the inverter will be burned. Second, due to the instantaneous charging of the large-capacity electrolytic capacitor of the inverter itself, it will cause sparks to the terminals, which will not only cause safety hazards, but also cause uneven surface of the connected terminals. affect the use of ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the current technical solution that the instantaneous charging of a large-capacity electrolytic capacitor will cause sparks to the terminal, which will not only cause safety hazards, but also affect the use of the product because of the uneven surface of the connected terminal. High-current protection device for high-power inverter or high-power load arc protection

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