A Charger-based EV Battery Diagnosis Service

Officials of SK On and SK Signet pose for a photo after signing a memorandum of understanding (MOU) at SK Signet's office on Yeouido, Seoul, on Nov. 24. 

SK On signed a memorandum of understanding (MOU) with SK Signet, a company specializing in electric vehicle (EV) chargers, on Nov. 24 to promote a charger-based battery diagnosis service.

The two companies plan to introduce a service next year allowing customers to check remaining battery life and charge levels while charging their EVs with an SK Signet charger next year. They also plan to develop a battery residual value evaluation method in 2023.

SK Signet will develop an EV charger that can collect battery data, while SK On will take on the role of analyzing battery data received from chargers.

The two companies' idea is simple. When a driver charges his or her EV with SK Signet’s rapid charger, SK On’s Battery as a Service (BaaS) analysis technology checks the vehicle’s battery life and conditions in real time. The diagnosis time is 30 minutes for a 50kW charger. The results of the diagnosis appear on the screen of the charger and an smartphone app that the two companies will develop in the future.

SK On has been developing BaaS analysis technology for battery diagnosis. Over the past three years, the company has improved diagnostic performance by analyzing data in 200 items from 4,000 EVs.

SK Signet is the world’s second-largest EV charger manufacturer, with a market share of more than 50 percent in the U.S. ultra-fast chargers market. The company is planning to load a battery diagnosis function into a new charger that will be released in 2023. It will take the wraps off the product at CES 2023.

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