Vehicle communication method and device and electric vehicle

A vehicle communication and vehicle technology, which is applied in the field of electric vehicles, devices, and vehicle communication methods, can solve problems such as the inability to realize communication and interaction between two vehicles, and achieve the effect of communication interaction

CN108407648AActive Publication Date: 2018-08-17BEIJING ELECTRIC VEHICLE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-08-17

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Abstract

The invention provides a vehicle communication method and device and an electric vehicle and relates to the technical field of vehicle control. A problem that communication interaction between two vehicles cannot be realized during vehicle-to-vehicle rescue charging in the prior art is solved. The vehicle communication method comprises the steps of obtaining the transmission power of a charging cable between a first vehicle and a second vehicle; and determining communication information between the first vehicle and the second vehicle according to the transmission power. The invention providesa communication method between the vehicles under the circumference of vehicle-to-vehicle rescue charging on the premise of not increasing any hardware cost and not changing any hardware design; andtherefore, the communication interaction between the two vehicles during the vehicle-to-vehicle rescue charging is realized.
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Description

technical field

[0001] The invention relates to the technical field of vehicle control, in particular to a vehicle communication method and device and an electric vehicle. Background technique

[0002] With the continuous improvement of the cruising range of electric vehicles, the capacity of the vehicle's power battery is also increasing, and it has the basis for external output of part of the energy. As long as the external output power module of electric energy is added, the external output of energy can be realized. The charging of electric vehicles is limited to the charging station. If the power battery of the vehicle is exhausted at a distance from the charging station, it can only wait for rescue, which takes a long time and costs high. Vehicle-to-vehicle rescue charging is a way to solve this problem. When the energy of the vehicle's power battery is insufficient, as long as there are vehicles with sufficient electric energy nearby that can output electric energy, t...

Examples

Embodiment Construction

[0044] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0045] In order to better understand the present invention, firstly, the principle of vehicle-to-vehicle rescue charging is briefly described. During vehicle-to-vehicle rescue charging, the electric energy output vehicle and the electric energy input vehicle are connected through a rescue charging cable to realize rescue charging. Such as figure 2 As shown, the external power supply control unit of the electric energy output vehicle simulates the charging pile, and the charging control unit of the electric energy input vehicle passes the CC (Connection Confirmation, connection confirmation) signal in the rescue charging cable, (ControlPilot, control guidance) CP signal, The PE (Protecting Earth, protection ground) line signal interface establishes a si...