Power supply loop protection device and method
A circuit protection and power supply technology, applied in circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as poor power circuit protection effect, and achieve the effect of improving reliability.
Pending Publication Date: 2021-10-01
SANY AUTOMOBILE MFG CO LTD
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[0003] The invention provides a power circuit protection device and method, which are used to solve the technical problem of poor protection effect of the power circuit in the prior art
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[0038] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0039] figure 1 The schematic structural diagram of the power circuit protection device provided by the present invention, such as figure 1 As shown, the power circuit protection device 100 includes a fuse 110 and a protection unit 120 arranged in the power circuit;
[0040] The protection unit 120, connected in series with the fuse 110, is used to collect real-time current signals in the p...
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The invention provides a power supply loop protection device and method. The device comprises a fuse and a protection unit which are arranged in a power supply loop, wherein the protection unit is connected in series with the fuse and is used for acquiring a real-time current signal in the power supply loop and performing overcurrent protection on the power supply loop based on the real-time current signal, and the specification parameter of the fuse is determined based on the real-time current signal collected by the protection unit. According to the power supply loop protection device and method provided by the invention, the power supply loop can be quickly and effectively cut off according to the real-time current signal, the fuse protection can be provided when the protection unit fails, and due to the dual protection of the power supply loop, the specification parameters of the fuse can be determined according to the real-time current signal collected by the protection unit, so that the safety of the power supply loop is improved. so that the advantages of the fuse and the protection unit are complemented, and the reliability of power supply loop protection is improved.
Description
technical field [0001] The invention relates to the technical field of mechanical engineering, in particular to a power circuit protection device and method. Background technique [0002] In working machinery, for the high-power power supply circuit, a short circuit inside the load electrical appliance will cause damage to the device and cause adverse consequences. In the prior art, blown fuses are usually used for protection. In this method, the specification of the fuse is basically selected based on experience or trial and error, resulting in the specification of the fuse being often too large. Therefore, the fuse cannot be fused in time, and the power supply circuit cannot be effectively protected, which also leads to an increase in the cost of electrical components. Contents of the invention [0003] The invention provides a power circuit protection device and method, which are used to solve the technical problem of poor protection effect of the power circuit in the ...
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IPC IPC(8): H02H3/08H02H3/05
CPCH02H3/08H02H3/05H02H3/006
Inventor 刘赞龙成冰鄢运和
Owner SANY AUTOMOBILE MFG CO LTD