The present invention aims at providing a laminated secondary battery in which no short circuit occurs even if an electrode sheet is not covered with an insulating resin. The present invention provides a laminated secondary battery in which positive electr...

There is provided a lithium ion secondary battery exhibiting a high capacity retention rate over a long period. There is also provided a method for manufacturing a lithium ion secondary battery including a positive electrode, a negative electrode containin...

There is provided a lithium ion secondary battery which has high safety and good life characteristics. There is also provided a gel electrolyte for a lithium ion secondary battery, which contains a lithium salt, a copolymer of specific monomers, a compound...

There are provided a nonaqueous-type electrolyte solution having high flame retardancy and a good capacity retention rate, and a device comprising the nonaqueous-type electrolyte solution. The nonaqueous-type electrolyte solution is used in a device compri...

To provide a secondary battery pack system that controls battery packs which are connected in parallel without requiring a complex system configuration, a secondary battery pack system of the present invention that supplies power to an electronic device in...

A stacked battery includes a square battery element in which a tabular positive electrode, a separator and a tabular negative electrode are laminated, wherein: one side of the battery element is a terminal connection section pulled-out surface, which is pr...

The present invention provides a polymer gel electrolyte capable of inhibiting the cell expansion of a polymer secondary battery and improving the cycle characteristics and high-temperature storage characteristics of a polymer secondary battery. The presen...

A secondary battery pack of the present invention includes a secondary battery block 3 in which a plurality of unit blocks 2 are connected in series; battery adjustment sections 5 that are each provided for each of the unit blocks 2 and have a function of ...

A battery pack includes a plurality of battery modules that house a plurality of unit cells in a case; and a protection circuit board that controls the charge and discharge of a plurality of the battery modules at once. The battery pack is highly flexible ...