Method for recharging lithium-ion battery of e.g. electric car, involves utilizing discharge current output from traction battery to heat traction battery, and providing charging current from distribution network to charge electric battery

摘要

The method involves utilizing a discharge current output from a traction battery (1) to heat the traction battery. A charging current is provided from a current distribution network to charge an electric battery (2) of the traction battery, where the current distribution network is connected to the traction battery. A heating resistor (8) is supplied with the discharge current such that the traction battery is heated by heat produced by joule effect. Controllable switches (9, 10) are connected to a control unit (11) of the traction battery to pass the switches from a state to another state. Independent claims are also included for the following: (1) a device for recharging a traction battery of an electric car and a hybrid car (2) a traction battery for an electric car and a hybrid car.