US 12,002,640 B1
Control system of an electromagnetic relay and electromagnetic relay
Xianglu Dai, Guangdong (CN); Jun Ye, Guangdong (CN); Lu Chen, Guangdong (CN); Haisong Qin, Guangdong (CN); and Aimin He, Guangdong (CN)
Assigned to SHENZHEN HESUNG INNOVATION TECHNOLOGY CO., LTD, Guangdong (CN)
Filed by Shenzhen Hesung Innovation Technology Co., LTD, Guangdong (CN)
Filed on Oct. 31, 2023, as Appl. No. 18/498,471.
Claims priority of application No. 202320452350.6 (CN), filed on Feb. 28, 2023.
Int. Cl. H01H 47/00 (2006.01); H01H 47/22 (2006.01)
CPC H01H 47/001 (2013.01) [H01H 47/22 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A control system of an electromagnetic relay, comprising:
an electromagnet coil;
a first resistor; and
a first voltage control element, wherein a first terminal of the electromagnet coil is connected to a first terminal of a first power circuit through the first resistor, a second terminal of the electromagnet coil is connected to a second terminal of the first power circuit, the first voltage control element is connected in parallel to the electromagnet coil, the first voltage control element is configured to control magnitude of a voltage across the electromagnet coil, so that force to which armature iron is subjected gradually changes, a rated voltage across the electromagnet coil satisfies a formula: U=R/(R+R1)*U1, and U denotes the rated voltage across the electromagnet coil, R denotes an internal resistance of the electromagnet coil, R1 denotes a resistance value of the first resistor, and U1 denotes a voltage of the first power circuit.