Inventor
LIU CHANGJIAN
CN15 patents
⚠️ This page may combine multiple inventors who share the name “LIU CHANGJIAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
13 patentsUS11366462B2Jun 21, 2022
High-voltage interlock device and fault detection method thereof
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD2 citations71
US12025666B2Jul 2, 2024
Detection circuit and detection method of electrical control device, and electric vehicle
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations49
US11927639B2Mar 12, 2024
High-voltage interlocking device and method for detecting the high-voltage interlocking device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations49
US11320481B2May 3, 2022
High voltage interlock circuit and detection method
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations49
US11303215B2Apr 12, 2022
System and method for providing a constant power source
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations49
US11996833B2May 28, 2024
Drive circuit
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations48
US11867748B2Jan 9, 2024
Electrical control device detection circuit, detection method, and electric vehicle
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations48
US11852670B2Dec 26, 2023
Method for monitoring insulation monitoring circuit and battery management system
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations48
US11549999B2Jan 10, 2023
High voltage interlock device and detection method thereof
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations48
US11031789B2Jun 8, 2021
Battery pack management system and control method thereof
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations48
US11413965B2Aug 16, 2022
High voltage interlock circuit and detection method thereof
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations47
US11171569B2Nov 9, 2021
Wake-up method and wake-up system for battery management system
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations47
US10725114B2Jul 28, 2020
Sampling detection circuit and method for detecting a circuit malfunction
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations37