Abstract: The present invention discloses a car charger. The car charger includes a bidirectional converter module, a bidirectional direct current (DC)/DC conversion module, a collection module, and a control module. The bidirectional converter module is connected to an alternating current (AC) terminal. The bidirectional DC/DC conversion module includes a first DC conversion unit, a transformer unit, and a second DC conversion unit. The first DC conversion unit is connected to the bidirectional converter module and the transformer unit. The second DC conversion unit is connected to a transformer module and an energy storage device. The collection module collects an output of the AC terminal, a rectified output of the bidirectional converter module, and an output of the second DC conversion unit, and collects an output of the energy storage device, an output of the first DC conversion unit, and an inverter output of the bidirectional converter module.

Abstract: An electric vehicle, a multifunctional car charger therefor and a control method thereof. The charger includes: a bidirectional AC/DC conversion circuit, a first and a second DC/DC conversion circuit, a sampling circuit and a control module. The sampling circuit samples a voltage and a current of a power grid, a voltage of the direct-current end of the bidirectional AC/DC conversion circuit, a voltage and a current of the power battery and a voltage and a current of the low-voltage battery respectively; and the control module is configured to control the bidirectional AC/DC conversion circuit, the first DC/DC conversion circuit and the second DC/DC conversion circuit according to the sampling result of the sampling circuit, to realize any one of a power battery charging function, a low-voltage battery charging function, a power battery alternating-current inversion function, a low-voltage battery alternating-current inversion function and a power battery low-voltage loaded output function.

Abstract: An information pushing method and system for a display screen of a refrigerator, and a refrigerator having the same are provided. The method includes: collecting ingredient information of the refrigerator; uploading the ingredient information to a server; analyzing by the server the ingredient information uploaded this time and historically uploaded ingredient information so as to acquire ingredient pushing information; transmitting the ingredient pushing information to the refrigerator and pushing the ingredient pushing information through the display screen of the refrigerator.

Abstract: The present disclosure discloses an energy management system of an electric vehicle, a control method therefor, and an electric vehicle.