Lg Chem, Ltd

Lg Energy Solution, Ltd.

Yanglim Choi

Hyeon Jin Song

Wontae Lee

Chang Bog Lee

The present invention relates to a system and a method for protecting a circuit between batteries, in which counter-electromotive force generated from the lead-storage battery is prevented from being applied to a MOSFET switch when power is cut off through the MOSFET switch in a circuit in which a vehicle lead-storage battery and a lithium polymer battery are connected to each other to prevent the MOSFET switch from overcurrent and prevent current, which leaks from the lead-storage battery when the lead-storage battery is charged, from being conducted to a path other than a determined path in advance.

System and method for protecting inter-battery circuit by using free wheeling path

The present invention relates to an apparatus and a method for protecting a MOSFET relay by using a voltage detector and a signal fuse, which calculate a detection voltage value through a voltage detector from an electrically conducted current value of a MOSFET relay provided in a battery main circuit for a vehicle and pre-block current applied to the MOSFET relay by operating a signal fuse when the calculated voltage value is more than a predetermined threshold to protect the MOSFET relay from being burned.

Apparatus and method for protecting MOSFET relay by using voltage detector and signal fuse

The present invention relates to a secondary battery, which detects a displacement of a gas discharging part and prevents battery cell swelling, and a system for charging a secondary battery and a method of manufacturing a secondary battery. The secondary battery include a gas discharging part, which is positioned at one end of a sealing part that seals an electrode assembly and induces a discharge of gas by weakening bonding force more than other attachment portions of the sealing part, and a detecting part which detects a displacement generated in the gas discharging part and generates an electric signal.

Secondary battery which detects displacement of gas discharge part to prevent battery cell swelling, system for charging secondary battery, and method for manufacturing secondary battery

The present invention relates to a system and a method for independently controlling a relay using bimetal which allow bimetal to operate based on a signal output from a micro controller unit when current of a predetermined threshold or more flows on a circuit to allow current which flows between a battery and the relay to flow bypassing the bimetal to independently control the relay regardless of whether a circuit pattern is abnormal.

System and method for independently controlling relay, using bimetal

The present invention relates to a transformer relay and a battery voltage measurement system using the same and the transformer relay includes: a transformer transforming voltage of a voltage measurement signal according to a wiring ratio of a first wiring and a second wiring; and a relay transferring voltage of a battery while an operation state is changed to an On state when the transformed voltage of the voltage measurement signal is input and the battery voltage measurement system using the transformer relay, includes: the transformer; and a measurement unit measuring a battery voltage value by receiving the voltage of the battery from the relay.

Transformation relay and battery voltage measurement system using same

The present invention relates to a system and a method of connecting a battery, which include a relay unit connected to a battery by a current, and allow a current with a different intensity to flow in the relay unit according to whether force applied to a circuit from the outside is detected and a size of the detected force, thereby maintaining or blocking the connection of the relay unit to the battery in consideration of the detection of the force and the degree of danger of the detected force.

Growing community of inventors

Daejeon, South Korea

Yanglim Choi