US 12,479,326 B2
Detection circuitry for control pilot abnormality of a DC charging pile
Sheng-Wen Sung, Tainan (TW); Jian-Hsieng Lee, Tainan (TW); and Chun-Chen Chen, Taoyuan (TW)
Assigned to Zerova Technologies Taiwan Limited, Tainan (TW)
Filed by PHIHONG TECHNOLOGY CO., LTD., Taoyuan (TW)
Filed on May 1, 2022, as Appl. No. 17/734,065.
Claims priority of application No. 111113499 (TW), filed on Apr. 8, 2022.
Prior Publication US 2023/0322115 A1, Oct. 12, 2023
Int. Cl. B60L 53/66 (2019.01); B60L 53/30 (2019.01); H02J 7/00 (2006.01)
CPC B60L 53/66 (2019.02) [B60L 53/305 (2019.02); H02J 7/00716 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A detection circuit for control pilot abnormality of a DC charging pile, said detection circuit electrically connected to a control pilot signal generating circuit and a control circuit installed in said DC charging pile, said detection circuit comprising:
a control pilot (CP) signal potential discrimination module;
a charging-discharging module electrically connected to said CP signal potential discrimination module; and
a controller protection triggering module electrically connected to said charging-discharging module;
wherein said CP signal potential discrimination module justifies voltage level of CP signals been input into said CP signal potential discrimination module, activates said charging-discharging module to charge said CP signals been output from said CP signal potential discrimination module to a predetermined steady-state voltage higher than a preset voltage level within a predetermined period of time, and then activates said controller protection triggering module to provide instant protection for said DC charging pile while an abnormal connection happened between said DC charging pile and an electric vehicle.