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Average volume pulse floatation type non-damage wide voltage regulating accumulator whole set DC screen

A battery and DC screen technology, applied in the field of DC screens, can solve the problems of large DC load in accidents, increase the power loss of voltage regulating silicon connection, increase the cost of DC screens and operating costs, etc., to reduce the output voltage level and ensure the capacity retention value , The effect of eliminating major hidden dangers

Inactive Publication Date: 2005-04-13
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that when it is used in a large power plant, the normal DC load of floating charge and the accidental DC load during an accident are both very large, and the current up to tens of amps to hundreds of amps must pass through the voltage regulating silicon connection, which increases the voltage regulation. The number and capacity of the silicon connection increases the power loss of the voltage regulating silicon connection, greatly increases the cost and operation cost of the DC panel, and brings inconvenience to the installation
In addition, due to the limitation of the circuit principle, it is impossible to realize the high-efficiency pulsating floating charge, which limits the further improvement of the battery capacity retention value and life

Method used

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  • Average volume pulse floatation type non-damage wide voltage regulating accumulator whole set DC screen
  • Average volume pulse floatation type non-damage wide voltage regulating accumulator whole set DC screen
  • Average volume pulse floatation type non-damage wide voltage regulating accumulator whole set DC screen

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Embodiment Construction

[0031] Now take the 220V DC system 2×1500AH lead-free battery complete set of DC screen as an example, combined with the attached figure 1 , 2 , 3 illustrate the specific implementation and working principle. It is known that the constant load such as control signals is 65A, the accident load is 660A, the float charge voltage of each battery is 2.23V, the float charge current of each battery group is 1.5A at the initial stage, and the maximum at the later stage is 6A, and the DC bus voltage is 230V.

[0032] exist figure 1 The two DC buses 1M and 2M are connected to control signal load 1N, closing load 2N, emergency lighting 3N, DC oil pump 4N and all normal and emergency DC loads. The anti-circulation channel is composed of 1D-4D 4 diodes.

[0033] 1CDJ is a floating charger, between terminals 5 and 6 is pulsating DC 26.4V, terminals 6 and 7 are connected, and terminals 7 and 8 output 229.7V pure DC voltage through switch 5K and anti-reverse diode 5D to directly supply 1M ...

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Abstract

This invention relates to a uniform capacity pulsed floating harmless wide voltage adjusting storage battery complete set DC screen in which a floating device for outputting pure DC and pulsed DC voltages is designed, the pure DC is provided to a DC main lead directly via a reaction diode, the pulsed DC is charged to the battery with pulsed floating, a dual-purpose device is designed for charging and floating to output pulsed DC to connect with the charge / discharge main lead and output the pure DC to connect with the DC main lead via the reaction diode for standby. Two sets of three-section two taps batteries are designed, the floating voltage of the main section is the same with that of the DC main lead and connected with the DC main lead in floating operation, two adjusting section batteries, operate when AC is off to realize harmless voltage adjustment via an anti-ring flow channel and harmless wide adjustment circuit.

Description

Technical field: [0001] This application belongs to the DC panel used in the electric power system, and is suitable for a complete set of DC panels for various storage batteries such as lead-free, cadmium-nickel, etc. Background technique: [0002] The closest existing technology to this application is the ZL99221860.8 utility model patent "No circulation and lead-free storage battery complete set DC screen" designed by the designer of the application. It is equipped with two DC buses 1M+ and 2M+ in the DC screen circuit, a floating charging bus FM and a charging and discharging bus CFM, and a shared negative bus M-. The No. 1 charger is connected to the floating bus through a switch, and the No. 2 bus The charger is respectively connected to the floating charging bus and the charging and discharging bus through a bidirectional switch, and one end of the two DC buses 1M+ and 2M+ is respectively connected to the cathode terminals of two sets of automatic voltage-regulating si...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/34
Inventor 孙海裕
Owner SHANDONG UNIV OF SCI & TECH
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