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Full-working condition control system for vanadium redox flow battery

A vanadium redox flow battery and control system technology, applied in the direction of fuel cell control, fuel cell, fuel cell additives, etc., can solve the disadvantages of vanadium redox flow battery system miniaturization, increase system production cost and maintenance cost, reliable Improve reliability and maintainability, simplify use and operation, and reduce production and maintenance costs

Active Publication Date: 2015-04-29
TIANJIN BINHAI ENERGY STORAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to realize the variable frequency speed regulation operation or constant speed operation of the vanadium redox flow energy storage battery system under different working conditions, conventional methods need to design a set of control devices, using general or special controllers, resulting in very complex structures and poor system operation reliability. and maintainability are poor, which is not conducive to the miniaturization of the vanadium flow energy storage battery system, and greatly increases the production cost and maintenance cost of the system

Method used

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  • Full-working condition control system for vanadium redox flow battery
  • Full-working condition control system for vanadium redox flow battery
  • Full-working condition control system for vanadium redox flow battery

Examples

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Embodiment 1

[0029] Such as figure 1 and figure 2 as shown in:

[0030] Embodiment 1 of the present invention provides a vanadium redox flow battery full working condition control system, the control system is a frequency conversion speed regulation control system 1, and the frequency conversion speed regulation control system 1 includes currents that are sequentially connected through the signal line 14 A sensor 11, a signal conversion module 12 and a frequency converter group 13. Among them, the current sensor 11 is a shunt, and its two ends are conductively connected with the stack 3 in the vanadium flow energy storage battery system through the signal cable 15, and since the charge and discharge current of the vanadium flow energy storage battery does not exceed 200A, therefore The current sensor 11 selects a shunt with a range of 200A and an output signal of 0mV-75mV. The current sensor 11 is mainly used to detect the current of the vanadium flow energy storage battery when the van...

Embodiment 2

[0039] Such as image 3 and Figure 4 as shown in:

[0040] Embodiment 2 of the present invention provides a vanadium redox flow battery full working condition control system, the control system is a constant speed control system 2, and the constant speed control system 2 includes a current sensor 21 sequentially connected through a signal line 24 , the signal conversion module 22 and the contactor group 23 . Wherein, the structure, connection relationship and function of the current sensor 21 are the same as those disclosed in the first embodiment, and will not be repeated here. The signal conversion module 22 includes a power supply terminal 221, a measurement signal input terminal 222 and a coil power supply output terminal 223, and the power supply terminal 221 is connected to a 24V DC power supply to input a working power supply, and its input is a voltage signal of 0mV~75mV , the measurement signal input terminal 222 is conductively connected with the output terminal ...

Embodiment 3

[0046] Such as Figure 5 and Figure 6 as shown in:

[0047] The control system of the present invention may include a current sensor 51, a signal conversion module 52, a frequency converter group 53 and a contactor group 54, wherein the structures and functions of the current sensor 51, the frequency converter group 53 and the contactor group 54 are respectively It is the same as that disclosed in the foregoing embodiment 1 and embodiment 2, and will not be repeated here. The only difference is that the signal conversion module 52 includes a power supply terminal 521, a measurement signal input terminal 522, a frequency conversion command output terminal 523 and a coil power supply output terminal 524, and the power supply terminal 521 is connected to a 24V DC power supply, input Working power supply, the input of which is a voltage signal of 0mV to 75mV, the measurement signal input terminal 522 is conductively connected to the output terminal of the current sensor 51 thro...

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Abstract

The invention provides a full-working condition control system for a vanadium redox flow battery. The system is a variable frequency speed regulation control system or a constant speed control system, and comprises a current sensor, a signal conversion module, a frequency converter group and / or a contactor group, wherein the signal conversion module comprises a power terminal, a measurement signal input terminal and a frequency conversion instruction output terminal and / or a coil power output terminal; the power terminal is connected with a 24V direct current power supply; the measurement signal input terminal is connected with the current sensor; the frequency conversion instruction output terminal is connected with the frequency converter group; the coil power output terminal is connected with the contactor group; and the current sensor is connected with an electric pile in a battery system, and the frequency converter group and the contactor group are connected with a circulating pump unit, so that variable frequency speed regulation running and / or constant speed running are realized. A universal or special controller is not required, so that the complexity and production and maintenance cost of the whole system are lowered; and the system is high in running reliability and maintainability and particularly suitable for a small-sized energy-storage vanadium redox flow battery system, and has broad application prospect.

Description

【Technical field】 [0001] The invention belongs to the technical field of vanadium redox flow batteries, and in particular relates to a full working condition control system of vanadium redox flow batteries. 【Background technique】 [0002] At present, a typical vanadium flow energy storage battery system relies on pumps to operate, and its operation mode is divided into two types: variable frequency speed regulation operation and constant speed operation; and there are four states: charging state, discharging state, standby state, and stop state. In order to realize the variable frequency speed regulation operation or constant speed operation of the vanadium redox flow energy storage battery system under different working conditions, conventional methods need to design a set of control devices, using general or special controllers, resulting in very complex structures and poor system operation reliability. And the maintainability is poor, which is not conducive to the miniatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04H01M8/04298H01M8/04537
CPCY02E60/50
Inventor 郑役军牛玉广申忠利郑东冬
Owner TIANJIN BINHAI ENERGY STORAGE TECH