How to charge the lithium-ion battery module and the lithium-ion battery module

摘要

PROBLEM TO BE SOLVED: To provide a lithium ion battery module capable of charging a cell in an overcharged state without requiring a circuit or the like for monitoring the state of charge of each cell. .. SOLUTION: This is a lithium ion battery module including an assembled battery formed by connecting single cells of a lithium ion battery in series, and a set of positive electrode current collectors and positive electrode active materials in which the above-mentioned cells are laminated in order. The positive electrode current collector and the negative electrode current collector include a layer, a separator, a negative electrode active material layer, a laminated unit composed of a negative electrode current collector, and an electrolytic solution, and the positive electrode current collector and the negative electrode current collector include a resin current collector layer, and the positive electrode active material layer The positive electrode active material contained is composed of a positive electrode active material having an olivine acid type crystal structure, a charging terminal for passing a charging current through the assembled battery, and an assembled battery voltage measurement for detecting the voltage across the assembled battery. A lithium ion battery module having terminals and not having a cell voltage measuring terminal for detecting a voltage between a positive electrode current collector and a negative electrode current collector of each of the above cell cells. [Selection diagram] Fig. 1