Control equipment and PDU dolly wireless communication system and communication method

Abstract

The invention discloses a control equipment and PDU dolly wireless communication system comprising a main control terminal and sub-control terminals, the main control terminal comprises a main control module and a main control WIFI module connected with the main control module, each sub-control terminal comprises a plurality of sub-control units, each sub-control unit comprises a sub-control module and a sub-control WIFI module connected with the sub-control module, the sub-control modules are connected with the main control module, the main control module is used for sending an AP configuration command to the sub-control modules, and the sub-control modules are used for receiving the AP configuration command and carrying out AP configuration. The invention further discloses a communication method of the wireless communication system of the control equipment and the PDU trolley. According to the invention, the PDU dolly communicates with the main control terminal in an idle state, and can be dynamically controlled to the sub-control terminals in a sub-control manner when entering a working state, thereby effectively avoiding the same-frequency interference of wireless signals, and guaranteeing the communication quality and reliability of the PDU dolly in the working state.

Description

technical field [0001] The invention relates to the technical field of new energy electric vehicles, in particular to a wireless communication system and a communication method for a control device and a PDU trolley. Background technique [0002] With the continuous popularization of electric vehicles, various charging devices are also developing rapidly. Currently, charging devices on the market all have power switching functions, but today’s power switching functions are all realized by relays. Although this solution achieves power There is a need for switching, but the cost is high and it is difficult to use it on a large scale. In response to this problem, a PDU robot device was introduced for power switching. This device consists of multiple robot cars running on the track, and links are linked by controlling to reach the designated position to realize power distribution. Its advantage is low cost. Wiring is simple. But there are also some problems with PDU robot equi...

AI Technical Summary

Problems solved by technology

[0003] 1) The PDU robot car is completely connected to the main control terminal by wire. Since the robot car will continue to move on the track, the design of how to place the communication lines is complicated. At the same time, the layout of a large number of cables will increase the complexity of the entire system and increase the difficulty of maintenance.

[0004] 2) The PDU robot communicates with the main control terminal through the track carbon brush. In this way, the carbon brush often rubs against the track, resulting in fast consumption of carbon brushes and frequent replacement

[0005] 3) The PDU robot uses an ordinary wireless solution to connect and communicate with the main control terminal. Due to the large number of PDU cars, the ordinary wireless communication solution will cause a large number of wireless signals to exist inside the cabinet at the same time, resulting in a temporary frequency between each wireless link. Interference, which seriously affects the communication quality and reliability, and secondly, there is co-frequency interference, which may lead to data collision and low communication efficiency

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