Abstract: An electric vehicle includes in-vehicle multimedia set in a rotatable manner, and the rotatable in-vehicle multimedia is used for providing a charge operation interface and a discharge operation interface. The charge and discharge control method includes: receiving a wake-up instruction input by a user, where the wake-up instruction is generated by rotating the in-vehicle multimedia by the user, and the wake-up instruction includes a charge wake-up instruction and a discharge wake-up instruction; waking up the in-vehicle multimedia in a sleep mode according to the wake-up instruction, so that the in-vehicle multimedia correspondingly displays the charge operation interface or the discharge operation interface; receiving a setting instruction input by the user through an operation interface, where the setting instruction includes a charge setting instruction and a discharge setting instruction; and controlling the electric vehicle to execute the setting instruction.

Abstract: An air outlet device for an air-conditioning system of a vehicle includes an air outlet assembly disposed at air vents of the air-conditioning system and a control unit. The air outlet assembly includes a plurality of first air doors and a plurality of driving components, the plurality of driving components are respectively connected to the plurality of first air doors, and each driving component is configured to drive the corresponding first air door. The control unit is connected to the plurality of driving components, and is configured to control the plurality of driving components to drive the plurality of first air doors to open or close independently.

Abstract: A method for controlling a multi-screen system includes acquiring a control instruction for the multi-screen system; and controlling a plurality of display screens to move according to the control instruction. The multi-screen system includes a plurality of display screens and a driving mechanism configured to drive the plurality of display screens to move in space.

Abstract: The present disclosure discloses a system and a method for developing a third-party application. The system includes: a vehicle-mounted device and a developer platform communicating with each other. The vehicle-mounted device generates a corresponding API according to a protocol analysis mode of a vehicle signal and API specifications, adds the API to a software development kit SDK, and sends the API to the developer platform. The developer platform publishes the SDK so that a developer can develop a third-party application according to the API in the SDK.

Abstract: The present disclosure discloses a system and a method for developing a third-party application. The system includes: a vehicle-mounted device and a developer platform communicating with each other. The vehicle-mounted device generates a corresponding API according to a protocol analysis mode of a vehicle signal and API specifications, adds the API to a software development kit SDK, and sends the API to the developer platform. The developer platform publishes the SDK so that a developer can develop a third-party application according to the API in the SDK.

Abstract: The present disclosure discloses a display method, a display system, and a vehicle. The display method includes: adding a target application identifier in a plurality of application identifiers in a first area on a display screen to a target position area in a second area, where each of the application identifiers corresponds to one weight value; sending a widget information invoking request to a corresponding application according to a weight value of the target application identifier; feeding back, by the application, an access address corresponding to the application if no widget information is invoked; and extracting widget information of the application according to the access address, and displaying the widget information in the target position area. According to the display method of the present disclosure, a widget of any application can be invoked as required, thereby quickly accessing the application.

Abstract: An electric vehicle includes in-vehicle multimedia set in a rotatable manner, and the rotatable in-vehicle multimedia is used for providing a charge operation interface and a discharge operation interface. The charge and discharge control method includes: receiving a wake-up instruction input by a user, where the wake-up instruction is generated by rotating the in-vehicle multimedia by the user, and the wake-up instruction includes a charge wake-up instruction and a discharge wake-up instruction; waking up the in-vehicle multimedia in a sleep mode according to the wake-up instruction, so that the in-vehicle multimedia correspondingly displays the charge operation interface or the discharge operation interface; receiving a setting instruction input by the user through an operation interface, where the setting instruction includes a charge setting instruction and a discharge setting instruction; and controlling the electric vehicle to execute the setting instruction.

Abstract: A detachable snap-fit hub assembly for electric fan, comprising a first member connecting to a motor and a second member connecting to fan blades, wherein said first member and second member are, respectively, provided with one or more sections of slide grooves and corresponding wedge protrusions, such that when said slide grooves fit tight with said wedge protrusions, said two members are accurately assembled together. Since said two members can be detached and assembled in a snap-fit manner, both transport of fans and assembly thereof are made simple and easy, and a high precision of fan assembly can also be ensured.