Electric vehicle and energy recovery system thereof

Abstract

The invention discloses an energy recovery system for an electric vehicle. The system comprises a power battery pack which is used for supplying power to the electric vehicle, a motor which is electrically connected with the power battery pack and has a motor working mode for converting the electric energy of the power battery pack into kinetic energy of the electric vehicle and a generator working mode for converting the kinetic energy of the electric vehicle into electric energy and providing the electric energy to the power battery pack, electric heating equipment which is electrically connected with the power battery pack and is in fluid connection with a heat dissipation system of the electric vehicle, and a controller which is electrically connected with the motor and the electric heating equipment and used for monitoring the motor working mode and the generator working mode of the motor, and when the motor is converted into the generator working mode from the motor working mode, the controller enables the heating power of the electric heating equipment to be increased so as to directly or indirectly receive the electric energy generated by the motor. According to the energy recovery system for the electric vehicle, the energy recovery utilization rate is high.

Description

technical field [0001] The present application relates to the field of electric vehicles, and more specifically, relates to an electric vehicle and an energy recovery system thereof. Background technique [0002] Compared with traditional fuel vehicles, electric vehicles (including pure electric vehicles or hybrid vehicles containing electric power) are of great significance to environmental protection because of the use of electric energy instead of fuel combustion. important factor in vehicle development. [0003] At present, in order to effectively improve the battery life of electric vehicles, in addition to improving battery capacity, setting energy recovery in electric vehicles is also a relatively effective technical means. The traditional energy recovery method of electric vehicles is to realize the braking of the motor to recover electric energy when the vehicle is coasting or braking, and to charge the battery to increase the cruising range. However, the amount o...

AI Technical Summary

Problems solved by technology

However, the amount of energy fed back to the battery by the motor is affected by whether the power battery is currently fully charged, the temperature of the power battery is low, or the temperature of the power battery is high. There is a phenomenon that energy recovery cannot be fully utilized, resulting in waste of recovered energy.

Images