Lg Chem, Ltd

Lg Energy Solution, Ltd.

Yean-Sik Choi

Sang-Hoon Lee

Chang-Hyun Sung

Ji-Eun Kim

Jae-Dong Park

Ji-Won Hwang

Chan-Ha Park

Keun-Wook Lee

Hyun-Ki Cho

Jung-Hyun Kwon

A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.

Battery pack management device

A wireless battery management system includes a plurality of slave BMSs coupled to a plurality of battery modules in one-to-one correspondence. Each slave BMS is configured to operate in active mode and sleep mode. Each slave BMS is configured to wirelessly transmit a detection signal indicating a state of the battery module. The wireless battery management system further includes a master BMS configured to wirelessly receive the detection signal from each of the plurality of slave BMSs. The master BMS is configured to set a scan cycle and a scan duration for each of the plurality of slave BMSs based on the detection signal, and wirelessly transmit a control signal to the plurality of slave BMSs. The control signal includes a wireless balancing command indicating the scan cycle and the scan duration set for each of the plurality of slave BMSs.

Wireless battery management system and battery pack including same

Provided are a battery management system and a battery pack including the same. The battery management system includes a plurality of slave controllers, a plurality of temperature sensors, and a master controller. The plurality of temperature sensors are disposed in a plurality of different regions within the battery pack in a distributed fashion. The master controller is communicably coupled to the plurality of temperature sensors through a wired communication network. The master controller is communicably coupled to the plurality of slave controllers through a wireless communication network. The master controller determines a position of each of the plurality of slave controllers based on a temperature value of each region measured by the plurality of temperature sensors.

Battery management system and battery pack including same

Provided is an apparatus for assigning identification information to a plurality of slave battery management units. The apparatus assigns different identification information to a plurality of slave battery management units. The apparatus includes: a casing jig configured to at least partially cover the plurality of slave battery management units; a wireless communication unit including a plurality of antennas disposed so as to correspond one-to-one to the plurality of slave battery management units; and a controller configured to control the wireless communication unit so as to transmit a wireless signal including different identification information to the plurality of slave battery management units.

Apparatus for assigning identification information to slave battery management units

A battery module equalization apparatus includes a plurality of slave controllers each electrically connected to the plurality of battery modules to measure voltage values of the plurality of battery modules, and having a slave charging/discharging channel through which the current that charges and discharges each battery module flows, and a master controller that receives the voltage value of each battery module from the plurality of slave controllers, selects at least one of the plurality of slave controllers based on the received voltage value, and transmits a CHARGE or DISCHARGE command to the at least one selected slave controller, and having a master charging/discharging channel through which the charging current supplied to the at least one slave controller and the discharging current supplied from the at least one slave controller flow.

Battery module equalization apparatus and battery pack and vehicle including the same

Disclosed are a wireless battery management system and a method for protecting a battery pack using the same. The battery pack includes a plurality of battery modules and at least one relay. The wireless battery management system includes a plurality of slave controllers electrically coupled to the plurality of battery modules one-to-one, and a master controller wirelessly coupled to each slave controller so as to be able to communicate with each slave controller. Each slave controller measures an operational parameter of the battery module electrically coupled thereto. Each slave controller wirelessly transmits a fault signal to the master controller when the measured operational parameter is outside of a predetermined normal range. The master controller turns off the at least one relay when the fault signal is received.

Wireless battery management system and method for protecting battery pack using same

A master battery management unit including a sensing unit generating pack information of the battery pack, a first master power supply unit generating a first operating voltage using voltage of the battery pack, a communication unit outputting a first switching signal in response to the first operating voltage supplied from the first master power supply unit, a second master power supply unit generating a second operating voltage using the pack voltage in response to the first switching signal, and a control unit operating using the second operating voltage supplied from the second master power supply unit, and testing a preset item based on at least one of the pack information and module information.

Master battery management unit using power from battery module

A battery management unit for a battery module, the battery management unit including a sensing unit electrically connected to a plurality of battery cells, the sensing unit detecting voltage of each battery cell of the plurality of battery cells and outputting a detection signal including voltage information representing the detected voltage, a first power supply unit generating a first operating voltage using a module voltage of the battery module, and a communication unit which operates using the first operating voltage, the communication unit including an antenna, a wireless communication circuit and a first input port, the communication unit receiving the detection signal from the sensing unit through the first input port, testing at least one preset item based on the detection signal, and outputting a RF signal representing a result of the testing through the antenna and the wireless communication circuit.

Battery management unit and battery pack including same

A battery management apparatus includes a master BMS and a plurality of slave BMSs connected to the master BMS by means of communication. The master BMS includes a master controller configured to generate operation order information of the plurality of slave BMSs based on state-of-charge information of each of a plurality of battery modules respectively connected to the plurality of slave BMSs. Each of the plurality of slave BMSs includes: a slave communicator configured to receive the operation order information generated by the master controller and receive battery temperature information measured by a temperature measurement sensor; and a slave controller configured to operate a battery cooler by using an output of a corresponding battery module according to a temperature value of the battery temperature information when the operation order corresponds to a first operation order according to the received operation order information or the slave communicator receives a first operation signal from another slave communicator.

Battery management apparatus and battery pack including the same

Disclosed herein are a wireless battery management system (BMS) and a battery pack including the same. The wireless BMS includes a plurality of slave BMSs installed and coupled to a plurality of battery modules of the battery pack in one-to-one correspondence, and a master BMS configured to wirelessly transmit a trigger signal to the plurality of slave BMSs for identification (ID) allocation to each of the plurality of slave BMSs. Each slave BMS is configured to generate a response signal including a respective allocated temporary ID in response to the trigger signal, and wirelessly transmit the response signal to the master BMS. For each given slave BMS, the master BMS is configured to receive the response signal from of the given slave BMS, and determine a formal ID to be allocated to the given BMS based on a received signal strength of the response signal.

Disclosed is a wireless battery management system and a battery pack including the same. The wireless battery management system may be operably coupled to a top-level controller, and includes a master BMS and a plurality of slave BMSs. The master BMS is configured to allocate different identification information to the plurality of slave BMSs using a wireless signal according to an identification information allocation command from the top-level controller. Each slave BMS may be configured to set its wireless address and regular ID by receiving the wireless signal when waking up by the top-level controller according to a predefined rule.

Wireless battery management apparatus and battery pack including same

A wireless battery management system and a battery pack which includes a master BMS configured to transmit a first radio frequency (RF) signal including a state detection command through a first wireless channel, and a plurality of slave BMSs coupled to a plurality of battery modules in one-to-one correspondence. Each of the plurality of slave BMSs is configured to detect state information of the battery module in which corresponding slave BMS is coupled in response to the first RF signal, and transmit a second RF signal indicating the state information of the battery module through the first wireless channel.

Growing community of inventors

Daejeon, South Korea

Yean-Sik Choi