Lithium secondary battery for use in electric vehicle

H - Electricity – 01 – M

Patent

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H01M 10/24 (2006.01) B60L 11/18 (2006.01) H01M 10/40 (2006.01) H01M 4/50 (2006.01) H01M 4/58 (2006.01) H01M 6/10 (2006.01) H01M 10/42 (2006.01)

Patent

CA 2281366

A lithium secondary battery for use in electric vehicle, includes: a battery case, and an electricity-generating body including a positive electrode, a negative electrode, and a separator, the positive and the negative electrode being wound or laminated via the separator so that the positive electrode and negative electrode are not brought into direct contact with each other. Each single battery has a ratio (X/E) of battery output X (W) and battery energy E (Wh), of 2 to 36 or a product (RxE) of battery internal resistance R (m .OMEGA.) and battery energy E (Wh), of 50 to 900 (m .OMEGA. Wh). The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series. The lithium secondary battery is designed so as to have a particular ratio of battery output and battery energy or a particular product of battery internal resistance and battery energy and thereby is capable of exhibiting performances necessary for electric vehicle, such as acceleration and the like when used as combined batteries obtained by connecting a required number of single batteries in series.

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