Method for matching lithium ion power batteries for automobiles

One embodiment of the invention provides a method for matching lithium ion power batteries for automobiles. The method comprises the following steps: obtaining a discharge capacity C value and an energy Q value of a battery to be screened; charging the battery to a first SOC value, and obtaining a voltage V0 of the current battery; discharging the battery to obtain the terminal voltage of the current battery, and obtaining DC internal resistance R; storing the battery at normal temperature for T1 hours, obtaining a battery voltage V2, and obtaining a voltage difference value delta V; finally determining whether the battery to be screened conforms to the demand or not according to one or more of the screening parameters: C, Q, R, V0 and delta V, for forming a power battery pack. The battery pack formed by batteries screened by the method for matching lithium ion power batteries for automobiles provided by the invention has relatively long service life and relatively stable energy output.