US 12,454,986 B2
Energy-saving electromagnetic brake and operation method thereof
Chieh-Cheng Chen, Taoyuan (TW); Ming-Chih Tsai, Taoyuan (TW); Chia-Chi Lin, Taoyuan (TW); and Yu-Wei Hsu, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on Oct. 5, 2022, as Appl. No. 17/960,434.
Claims priority of application No. 202210411580.8 (CN), filed on Apr. 19, 2022.
Prior Publication US 2023/0332654 A1, Oct. 19, 2023
Int. Cl. F16D 63/00 (2006.01); F16D 121/20 (2012.01); H02K 3/04 (2006.01); H02K 11/30 (2016.01)
CPC F16D 63/002 (2013.01) [H02K 3/04 (2013.01); H02K 11/30 (2016.01); F16D 2121/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An energy-saving electromagnetic brake, comprising:
a base;
a first winding coil, disposed inside the base, wherein the first winding coil has a first resistance value;
a second winding coil, disposed inside the base and disposed around the first winding coil, wherein the second winding coil has a second resistance value, and the second resistance value is greater than the first resistance value; and
a control circuit component, disposed inside the base, wherein the control circuit component is electrically connected to the first winding coil and the second winding coil;
wherein in a first period, the control circuit component drives the first winding coil, and in a second period, the control circuit component simultaneously drives the first winding coil and the second winding coil, and the first winding coil and the second winding coil are connected in series;
wherein the control circuit component comprises:
a resistor, having a first terminal and a second terminal, wherein the first terminal of the resistor receives an input voltage and is electrically connected to a first terminal of the first winding coil;
a control circuit, electrically connected to the second terminal of the resistor;
a first switch unit, having a first terminal, a second terminal and a control terminal, wherein the first terminal of the first switch unit is electrically connected to a second terminal of the first winding coil and a first terminal of the second winding coil, the second terminal of the first switch unit is electrically connected to a ground terminal, and the control terminal of the first switch unit is electrically connected to the control circuit; and
a second switch unit, having a first terminal, a second terminal and a control terminal, wherein the first terminal of the second switch unit is electrically connected to the ground terminal, the second terminal of the second switch unit is electrically connected to a second terminal of the second winding coil, and the control terminal of the second switch unit is connected to the control circuit.