NFC antenna, charging cabinet and electric vehicle

Abstract

The invention relates to an NFC antenna, a charging cabinet and an electric vehicle; the NFC antenna comprises a substrate and a radiation sheet arranged on the surface of the substrate, the radiationsheet is provided with at least two induction areas on the substrate, and a penetration area is formed between two adjacent induction areas. After the NFC antenna rotates by a preset angle, any one induction area is at least partially overlapped with one induction area before rotation. Each induction area can receive radio frequency signals sent by the lithium battery, when the lithium battery isplaced into the battery bin or the charging bin according to different angles, the NFC antenna rotates by a preset angle relative to the lithium battery, and therefore, magnetic lines of force sent by the lithium battery can penetrate through the different induction areas, and communication with a vehicle or a charging and battery replacing cabinet is achieved. Moreover, the metal object of the lithium battery can be arranged in the range of the penetration area, so that the attenuation of the metal object to the magnetic line of force is obviously reduced. Therefore, the lithium battery canbe placed into an electric vehicle or a charging and battery replacing cabinet at different angles, communication is not affected, and use is more convenient.

Description

technical field [0001] The invention relates to the technical field of near field communication, in particular to an NFC antenna, a charging and changing cabinet and an electric vehicle. Background technique [0002] With the popularization and use of lithium batteries, various two-wheeled and tricycles on the market have used lithium batteries in large quantities. In order to solve the universal problem of lithium batteries, the NFC (Near Field Communication) communication solution is widely used in the communication between lithium batteries and vehicles and charging cabinet devices. [0003] Metal objects are not allowed within the magnetic flux range of the NFC antenna, otherwise the communication quality of the NFC will be greatly reduced. The NFC antenna on the battery side generally cannot be centered. Therefore, when lithium batteries are placed in charging and changing cabinets or vehicles, there is a problem of directionality. Once placed in the wrong direction,...

AI Technical Summary

Problems solved by technology

Once placed in the wrong direction, the communication signal will weaken exponentially, resulting in problems such as signal instability and poor accuracy.

[0004] However, for ordinary users who do not understand lithium batteries, charging and changing cabinets, and vehicles, it is difficult to accurately distinguish the direction in which lithium batteries are put in, and it often happens that lithium batteries are put in the wrong direction, which leads to the failure of lithium batteries. Inconvenient to use

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