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Modular charging system for electrically operated power supplies

A technology of electric power operation power supply and charging system, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as system collapse, system instability, high failure risk, etc., and achieve the effect of strong engineering practicability and low cost

Active Publication Date: 2016-02-17
杭州奥能电源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the shortcomings in the prior art such as the collapse of the current sharing control of the entire system due to the failure of the rectifier module or the failure of the monitoring module, and the system instability and high failure risk caused by the current sharing scheme relying too much on the monitoring module. Based on the structure of RS485 bus, using the independence and uniqueness of the machine number of the rectifier module itself, it realizes the modularization of the power supply for electric operation that can complete the independent current sharing of each rectifier module without adding any signal transmission lines. charging system

Method used

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  • Modular charging system for electrically operated power supplies

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Embodiment 1

[0022] Modular charging system for electrically operated power sources such as Figure 1 to Figure 2 As shown, it includes the AC power distribution module connected to the three-phase AC, the rectification module that converts the AC output from the AC power distribution module into DC, and the monitoring module that outputs the voltage and current required by the load according to the charging information of the load. There is only one monitoring module mentioned above, and two or more rectifying modules are connected in parallel. Each rectifying module and monitoring module are connected through the RS485 bus. During each current sharing process in the system, the internal controller of each rectifying module performs the following judgment steps:

[0023] Step 1. Detect whether the communication with the monitoring module is normal, and if normal, turn to step 5;

[0024] Step 2. Generate random time according to the machine number of the rectifier module, and compete for ...

Embodiment 2

[0031] A modular charging system for electric operation power supply, including an AC power distribution module connected with three-phase AC, a rectification module that converts the AC output from the AC power distribution module into DC, and outputs the voltage required by the load according to the charging information of the load and current monitoring module. The monitoring module is responsible for managing the rectification module, and there may be multiple rectification modules. The existing RS485-based current sharing technology uses a monitoring module to receive the load current value of other rectification modules, and calculates the load current value after current sharing, and then sends it to each rectification module through the RS485 bus, and each rectification module Actively adjust its own output current to achieve system current sharing. If the monitoring module fails, the entire system current sharing will collapse.

[0032] The present invention is under...

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Abstract

The invention relates to the technical field of power supplies, and discloses a modular charging system for power operation power supplies. The modular charging system comprises an alternating-current power distribution module connected with three-phase alternating current, rectifier modules used for converting alternating current output by the alternating-current power distribution module into direct current, and a monitoring module used for outputting voltage and current required by a load according to charging information of the load. The monitoring module is responsible for managing the rectifier modules, and the system can comprise a plurality of rectifier modules. The risk that current sharing control of the whole existing charging system collapses due to fault of the rectifier modules or fault of the monitoring module is solved, and the safety and reliability of the system can be ensured.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a modularized charging system for an electric power supply. Background technique [0002] At present, there are mainly two types of current sharing technologies, one is hardware current sharing based on current sharing chip, the circuit is complicated, and the hardware cost is higher; the other is digital current sharing based on DSP CAN communication mode, but the actual engineering application The price of CAN devices in China is about 2-3 times that of RS485, and the price of core CPUs with CAN functions such as DSP is much higher than that of chips without CAN functions such as AVR single-chip microcomputers. Due to the failure of a single rectifier module or monitoring module, the traditional charging system has the risk of causing the collapse of the current sharing control of the entire system, and the system instability and high failure risk caused by the current s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02
Inventor 汪维玉陈虹
Owner 杭州奥能电源设备有限公司
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