Rail transit intelligent high-voltage charger based on touch screen

Abstract

The present invention relates to a rail transit intelligent high-voltage charger based on a touch screen. The rail transit intelligent high-voltage charger based on the touch screen comprises a three-phase alternate current input circuit, a three-phase controllable rectification circuit, a direct current filtering circuit, a direct current output switch circuit, a master controller and a touch screen which are connected in order. The master controller includes a DSP processor, a memory, a power supply, a voltage and current measurement circuit, an input detection circuit, an output control circuit, an output driving circuit, a RS485 communication interface and a CAN communication interface. The voltage and current measurement circuit is connected with the three-phase controllable rectification circuit, the input detection circuit is connected with the three-phase controllable rectification circuit and the direct current output switch circuit, and the output control circuit is connected with the three-phase alternate current input circuit and the direct current output switch circuit; and the output driving circuit is connected with the three-phase controllable rectification circuit, the RS485 communication interface is connected with the touch screen, and the CAN communication interface is connected with a BMS (Battery Management System) system. Compared with the prior art, the rail transit intelligent high-voltage charger based on a touch screen is convenient for operation, high in controllability and good in safety performance, etc.

Description

Technical field [0001] The invention relates to a charger, in particular to a rail transit intelligent high-voltage charger based on a touch screen. Background technique [0002] At present, there are many charger manufacturers in China, and most of the manufacturers’ users are traditional users, such as car start batteries, forklift batteries, battery car batteries, program-controlled switch backup power batteries, power operation power backup batteries, etc., but these are related to rail transit. Power batteries are different. Generally, the charging voltage of rechargeable batteries is about tens of volts, while the high-voltage charging voltage of power batteries for rail transit is about 1300V. In order to ensure the stable charging of power batteries for rail transit, corresponding The charger can output high voltage, output voltage and current is more stable, convenient for real-time monitoring, and adjustable control parameters, which can be called to view historical ope...

AI Technical Summary

Problems solved by technology

[0003] 1) When you don't know the state of the battery, you can't detect and judge the battery, and you don't know how to choose the charging method

[0004] 2) The simplification of the charging mode and the poor controllability of the output voltage cannot satisfy the charging of multiple types of batteries

[0005] 3) The temperature and capacity of the battery cannot be detected, and the charging curve cannot be optimized, resulting in inefficient charging or affecting battery life

If only the PC control method is used, and the charger used for rail transit is far away from the PC, it is extremely inconvenient for the operator.

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