Non-Aqueous Electrolyte Solution, Cell Pack, and Method for Manufacturing Cell Pack

• Main Author: Matsuoka, Naoki
• Format: Patent
• Language: English
• Published: 06.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Provided is a high-capacity cell pack in which cell imbalance is eliminated, precipitation of a poorly soluble redox shuttle can be prevented, deterioration due to overcharging is suppressed, cell yield is improved, and charge/discharge cycling is stable. The cell pack according to the present invention is a cell pack comprising non-aqueous secondary cells each comprising a non-aqueous electrolyte solution containing an electrolyte salt and a non-aqueous solvent, a positive electrode, and a negative electrode, wherein the cell pack is configured with a module in which two or more of the non-aqueous secondary cells are connected in series or with two or more of the modules in parallel, or the cell pack is configured with a module in which two or more of the non-aqueous secondary cells are connected in parallel or with two or more of the modules in series; each of the non-aqueous secondary cells constituting the module has a ratio of maximum capacity (B) to minimum capacity (A) of 1.00<B/A<2.00; and the non-aqueous electrolyte solution contains a redox shuttle having a reversible redox potential at a greater electropositive potential than a positive electrode potential at full charge.