LG Chem's grant US10807479B2, "Battery charging system for electric vehicle charging station" (issued October 20, 2020), is interesting precisely because it moves the battery out of the vehicle and into the station. The independent claim is built around a charging station that carries its own energy storage and uses it to supply charge to a connected vehicle. The CPC confirms the read: B60L 53/302 and B60L 53/14 are vehicle-charging classes, and B60L 58/26 is battery thermal management — so the claim is about an infrastructure-side battery, thermally managed, feeding the car.
The reason a battery-maker files this is strategic rather than incidental. A fast charger pulling hundreds of kilowatts straight from the grid is a demand problem; a station with a buffer battery can charge slowly from the grid and discharge fast into the car, smoothing the load. For a cell and pack supplier, owning IP on the stationary-storage layer of charging infrastructure extends the addressable surface beyond the vehicle pack. That is the roadmap tell hiding in an otherwise dry charging patent.
On scope, the teachable point is that the novelty is the station-integrated storage-and-delivery architecture, not the act of charging a car, which is heavily prior-arted. The independent claim has to tie the buffering battery to the delivery path to be defensible; the dependent claims then add the thermal-management and control limitations that make it hard to design around. Those dependents — the B60L 58/26 thermal piece especially — are where the real protection sits.
Dated to October 2020, this grant sits right as grid-load concerns about DC fast charging were becoming a board-level topic for utilities and operators. LG Chem positioning on the buffered-station architecture in that window is a measured bet that the bottleneck in charging would be the grid interface, not the connector. Read the claims, not the abstract, and what you find is a company staking the infrastructure-storage corner of the charging map.