A battery pack which is constituted by a plurality of lithium secondary batteries and which can prevent performance deterioration and has a long life is provided. The battery pack is manufactured by connecting in series four lithium ion batteries in which ...

The present invention relates to a battery module having a lithium battery. A battery module (32) with an excellent cooling effect includes a battery unit (194) and a circuit unit (192). The battery unit (194) includes a casing main body (195) having an ex...

The present invention provides a non-aqueous electrolytic solution secondary battery which can obtain stable power regardless of a depth of discharge and which can detect residual capacity easily. Graphite particles G having a predetermined particle diamet...

The present invention provides a lithium-ion secondary battery whose power characteristic has been improved without widening a battery size. A cylindrical lithium-ion battery 20 accommodates a winding group 6 and a non-aqueous electrolytic solution within ...

The present invention provides a battery structure for an electric vehicle which has an excellent cooling performance, which can fix battery cells securely, and which can improve work efficiency in assembling. A battery module 1 is provided with a battery ...

A power system where energy generated at a deceleration time of a running vehicle such as an automobile can be accepted as regenerative energy sufficiently and safely is provided. In a power system 10, a non-aqueous solution system secondary battery group ...

A cylindrical lithium-ion battery with excellent safety where abnormal heat generation and remarkable deformation of a battery container do not occur even at an abnormal time is provided. When an average diameter of a winding group 6 is A mm, an inner diam...