LG에너지솔루션과 ADI(Analog Devices, Inc., 아나로그디바이스)가 배터리 관리 토털 솔루션(BMTS) 경쟁력 강화를 위한 협력에 나섰다.
Joint development of real-time measurement technology for internal temperature of electric vehicle battery cells
LG Energy Solution and ADI (Analog Devices, Inc.) have joined forces to strengthen the competitiveness of their battery management total solution (BMTS).
LG Energy Solution announced on the 5th that it signed an MOU for joint development of electric vehicle battery cell internal temperature measurement technology at the ADI headquarters in Boston, Massachusetts, USA, with the attendance of LG Energy Solution BMS Development Center Director Lee Dal-hoon and ADI BMS Business Unit Head Roger Keen.
Through this MOU, the two companies agreed to cooperate in the development of improved fast-charging technology through the supply of high-performance battery management chips (BMICs, Battery Management Integrated Circuits) and the establishment of a precise battery temperature measurement algorithm for two years.
ADI is known as a technology leader focused on developing sustainable energy solutions and is building a broad BMIC portfolio.
Impedance is a term that refers to the degree of resistance that hinders the flow of current or voltage changes, and is also called on-resistance.
Impedance measurement is a technology that accurately measures impedance by detecting the flow of current and voltage through a precisely controlled frequency using BMIC. Measuring the impedance that changes depending on the battery condition enables precise analysis and diagnosis of the battery's internal condition.
Until now, existing BMS have used a method of managing the results obtained by separately attaching a temperature measuring device to the outside of the battery cell through the BMIC.
Because it is difficult to measure the exact temperature inside individual battery cells in real time, the standard for safe charging temperature had to be set conservatively, which limited the improvement in charging speed.
The technology utilizing the impedance measurement method being developed this time can help improve charging speeds by more accurately estimating the temperature inside each battery cell without the need for a temperature measuring device and enabling efficient temperature management.
It is also expected to contribute to improving battery performance and lifespan by enhancing fast charging safety and accurately identifying the battery's charging and health status.
So far, this technology has been mainly applied to analyzing defects in batteries used. Many research institutes are researching how to apply this technology to electric vehicle batteries in use, but it has not yet been commercialized. If the technological collaboration between the two companies is successful, it will become an innovative case of applying impedance measurement methods to real-time analysis of the internal state of electric vehicle batteries.
LG Energy Solution plans to build a more advanced BMTS by combining its accumulated battery manufacturing and BMS capabilities with ADI’s high impedance measurement technology, thereby providing differentiated customer value.
“Through this collaboration with ADI, which has an innovative BMIC portfolio, we will further enhance our BMTS capabilities and further strengthen LG Energy Solution’s overwhelming technological prowess and differentiated customer value,” said Lee Dal-hoon, managing director and head of LG Energy Solution’s BMS Development Center.
“Our collaboration with LG Energy Solution expands on ADI’s ongoing commitment to the energy transition,” said Roger Keen, general manager of ADI’s BMS business unit. “We look forward to working with LG Energy Solution to bring cutting-edge, efficient batteries to market and further advance the clean energy ecosystem.”
Meanwhile, LG Energy Solution is continuing its efforts to strengthen its BMTS capabilities, including by collaborating with Qualcomm in March to develop an advanced BMS diagnostic solution based on a system-on-chip (SoC).