US 12,461,137 B2
Shielding-type insulation detection structure
Yicong Xie, Shanghai (CN); Weiqiang Zhang, Shanghai (CN); and Shuzhu Su, Shanghai (CN)
Assigned to Delta Electronics (Shanghai) Co., Ltd., Shanghai (CN)
Filed by Delta Electronics (Shanghai) Co., Ltd., Shanghai (CN)
Filed on Jun. 5, 2023, as Appl. No. 18/205,825.
Prior Publication US 2024/0402236 A1, Dec. 5, 2024
Prior Publication US 2025/0264516 A9, Aug. 21, 2025
Int. Cl. G01R 31/12 (2020.01); G01R 31/52 (2020.01)
CPC G01R 31/1272 (2013.01) [G01R 31/52 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A shielding-type insulation detection structure, comprising:
an input power source comprising a first terminal and a second terminal;
a first shielding layer electrically connected with the first terminal of the input power source;
a second shielding layer comprising a first sub-layer and a second sub-layer, wherein the first sub-layer and the second sub-layer are separated from each other;
an insulation layer disposed between the first shielding layer and the second shielding layer;
a first impedance unit electrically connected between the first sub-layer of the second shielding layer and the second terminal of the input power source;
a second impedance unit electrically connected between the second sub-layer of the second shielding layer and the second terminal of the input power source; and
a detection circuit electrically connected with the first sub-layer and the second sub-layer, wherein a detection signal related to a voltage difference between the first sub-layer and the second sub-layer is detected by the detection circuit.