China’s new national standard counts a cell as solid-state only if under 0.5% of its contents escape under heat and vacuum. I read the first production cell to pass it alongside the maker’s own patents.
BMW’s Gen6 battery plant, opened October 1, 2026, sets foam between cylindrical cells. We set claim 1 of BMW’s US12555843B2 and Rivian’s US12542330B2 beside BMW’s public material and separate what is confirmed from what is blank.
CATL’s US12540983B2 claims a method that feeds the values at which dQ/dV, dynamic internal resistance or dV/dQ first reach two process variations in the first formation stage into a two-dimensional Gaussian model to screen out cells with electrolyte or moisture anomalies. We set out the claims and family, and why switching to Mahalanobis distance leaves the boundary unchanged.
LG Energy Solution has agreed to look for battery-reuse storage business in the US with B2U Storage Solutions. B2U holds a US patent on stacking EV packs as whole packs, while in Korea the Used Battery Act, taking effect in May 2027, sets a different threshold.
CATL began cell trial production at its plant in Debrecen, Hungary, on September 22, 2026. Equipment installation ended in the spring, but trial production opened in the autumn after permitting. We look at what trial production validates and how process know-how and patents are protected and enforced in Hungary, which sits outside the UPC.
Fluence’s US12632024B2 claims, as one closed loop, estimating ESS capacity from field data and taking a corrective action that adjusts temperature, configuration, number of components or material according to the result. We follow its rainflow partial-cycle dependent claim and three forms of independent claim to read the boundary of the rights and the room to design around them.
Korea’s 2026 ESS central contract market has introduced, for the first time, a 25-year contract in Jeju for facilities “capable of two charge-discharge cycles a day for 25 years.” That is 18,250 cycles by arithmetic. We compare the number with announced cycle lives and note that a patent on reviving capacity is already registered in Korea.
The battery cell manufacturing process divides broadly into three stages: electrode manufacturing, cell assembly, and formation (activation).
Battery news articles and spec sheets pile up numbers such as V, Ah, Wh, Wh/kg, C-rate, SOC/SOH and cycle life.
Patent numbers such as US2025/0112325A1, US11378527B2 and WO2026045268A1 appear in battery news articles, press releases and this site’s own patent analyses.