Hitachi High-Tech Corp., Japan, announced the development of a remote service to diagnose the degradation status for on-board automotive lithium-ion batteries. Achieving stable and efficient battery operation is becoming important for deploying electric vehicles (EVs). Hitachi High-Tech will start to propose this service to global customers through various networks to contribute to a circular society by solving customer issues.
Hitachi High-Tech has analyzed thousands of lithium-ion batteries and its operational data which is remotely taken from EVs in commercial operation. This field trial contributed to develop the technology to accurately estimate the degradation of State of Health (SOH) of lithium-ion battery packs and cells. It also demonstrated keeping track of the time-series SOH of on-board batteries and monitoring changes from the past to the present. This will allow customers to efficiently manage a large number of EVs in commercial operation from a central location.
In 2020, Hitachi High-Tech developed a rapid diagnostic method for battery degradation that instantly assesses the performance degradation and remaining life of lithium-ion batteries.
To date, it has been necessary to remove the batteries from the vehicle to diagnose the degradation of on-board batteries, but the introduction of this service enables remote monitoring of battery degradation and provides an operational environment to make the most of battery life. Managing the on-board usage history will also lead to developing opportunities to utilize used EV batteries for energy storage systems or efficient recycling for material recovery.
This service is expected to promote the transition to electric vehicles in commercial sector, where the vehicle utilization rate is higher due to long driving distance with extended operational time that will heavily impact on battery degradation.
Image – Overview of the service
For more information:
Hitachi High-Tech Corporation
https://www.hitachi-hightech.com
