A fault detection method includes: sequentially transmitting a first control signal to control chips corresponding to each of the plurality of battery switches after detecting a reverse feeding fault, when the plurality of battery switches are turned on and the plurality of utility power switches…
A diagnostic circuit () for diagnosing a battery disconnect unit () for disconnecting a battery system () from an electrical system (). The battery disconnect unit () includes a first switching element (S) and a second switching element (S). A first connection of the first switching element (S) is…
A power supply assembly comprising a load supply converter system (8) and energy saving transfer route (457) both connected electrically to a load connection (71). The energy saving transfer route (457) bypasses the load supply converter system (8), and comprises a bypass switch system (5) having a…
A diagnostic device diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit.
The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack or link side) and checks the health status of the contactors. The mechanism connects isolation…
An abnormality diagnostic device and method for a MOSFET switch element included in a rechargeable battery pack is provided that makes it possible to determine whether there exists a short circuit abnormality (fusion) in a MOSFET switch element that causes a charge current to flow in. An on/off…
The present disclosure is generally directed to a plurality of solid state switches of varying periphery sizes connected in series between a power source and a load. A built-in test circuit senses an overvoltage condition across one or more of the solid state switches of varying periphery sizes and…