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Uninterruption power supply

A power supply and capacitor technology, applied in the field of uninterruptible power supply, can solve problems such as increasing the cost of UPS, and achieve the effect of reducing costs

Active Publication Date: 2011-02-09
SHENZHEN KSTAR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the above-mentioned prior art are: it is necessary to set up another charging circuit in the mains mode to charge the battery, and this additional charging circuit will increase the cost of the UPS.

Method used

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Examples

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Embodiment Construction

[0013] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0014] like figure 1 As shown, an uninterruptible power supply includes a positive-phase boost module, a mains negative-phase boost module, a secondary battery, a first energy storage device, a second energy storage device, an inverter module and a buck-boost bidirectional converter. The input of the positive-phase boost module is coupled with the secondary battery and the mains, and its output is coupled with the input of the first energy storage. The positive-phase boost module is used to convert the positive-phase voltage output by the mains or the secondary battery into a positive bus DC voltage on the first accumulator. That is, when the mains is normal (that is, in the mains mode), the positive-phase boost module converts the positive-phase voltage output by the mains into the positive bus DC voltage on the first energ...

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PUM

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Abstract

The invention discloses an uninterrupted power supply (UPS) which comprises a positive-phase boosting module, a negative-phase boosting module of a mains supply, a secondary battery, a first power accumulator, a second power accumulator, an inversion module and a stepdown-boosting bidirectional converter. An input of the positive-phase boosting module is coupled with the secondary cell and the mains supply, and an output of the positive-phase boosting module is coupled with the input of the first power accumulator; the output of the negative-phase boosting module of the mains supply is coupled with the input of the second power accumulator; the output of the first power accumulator and the output of the second power accumulator are coupled with the input of the inversion module; the stepdown-boosting bidirectional converter is connected between the secondary cell and the second power accumulator and is used for step down the DC voltage of a negative bus under a mains supply mode to charge the secondary cell, and boosting the voltage of the secondary cell to charge the second power accumulator. The invention discloses a new topological structure which is more economical than the existing topological structures.

Description

technical field [0001] The invention relates to an uninterruptible power supply. Background technique [0002] With the continuous development of the communication and electronic industries, people have higher and higher requirements for the stability and reliability of the power supply. Uninterruptible power supply is a product that can provide highly reliable and stable power supply for computers, servers, communication equipment, etc. With the wide application of computers and computer networks, the demand for single-input and single-outline online UPS is also increasing. At present, the design of online small and medium power UPS generally adopts the structure described in the US patent US6069412, that is, the battery negative pole and the neutral line share the ground, and the battery boost and the mains boost share components. However, the disadvantage of the above-mentioned prior art is that an additional charging circuit in commercial power mode is required to char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/34
Inventor 蔡雄兵杨戈戈刘程宇
Owner SHENZHEN KSTAR SCI & TECH
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