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DC uninterrupted power supply system and power supply method

A technology of power supply system and power supply method, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve problems such as low reliability and poor power supply quality, and achieve the effects of avoiding surge impact, ensuring power supply quality, and ensuring safety

Pending Publication Date: 2018-06-15
BEIJING INST OF SPACE LAUNCH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low reliability and poor power supply quality in existing uninterruptible power supply methods, the present invention innovatively proposes a DC uninterruptible power supply system and power supply method, which achieve high reliability, The purpose of high-quality DC uninterruptible power supply

Method used

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  • DC uninterrupted power supply system and power supply method

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Embodiment 1

[0033] like figure 1 , 2 As shown, this embodiment specifically discloses a DC uninterrupted power supply system, which includes a battery pack, a charger and at least one power supply device. In the present invention, the power supply device is a three-phase mains power supply device, a single-phase power supply device At least one of mains power supply equipment, chassis power supply equipment, and diesel generator set power supply equipment; each type of power supply equipment has at least one quantity, and at least one is turned on during normal operation; specifically, in this embodiment, including the above four All kinds of power supply equipment, three-phase mains power supply equipment, single-phase mains power supply equipment, chassis power supply equipment and diesel generator set power supply equipment are connected in parallel with each other, single-phase mains power supply equipment includes single-phase rectifier device (with its own output resistance The thr...

Embodiment 2

[0036] This embodiment is based on the same inventive concept as the first embodiment, and is a method for uninterrupted power supply by using the DC uninterruptible power supply system in the first embodiment. The power supply method includes the following steps: figure 1 , 2 shown, where, figure 2 The "1" in it means the switch is on, and the "0" means the switch is off.

[0037] Step 1, adopt at least one external power supply mode among three-phase mains power supply, single-phase mains power supply, chassis power supply and diesel generator set power supply, and output DC power through the external output terminal; When the load is purely resistive, the third switch KM1 is turned on within the fourth time period; the fourth switch KM0 is turned on after the fifth time period after the third switch KM1 is turned on; after the fourth switch KM0 is turned on, the sixth time period has passed , disconnect the third switch KM1.

[0038]Step 2, in this step, when the batter...

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Abstract

The invention discloses a DC uninterrupted power supply system and a power supply method. The power supply system comprises a battery pack, a charger and at least one power supply device, wherein thecharger is connected between an output end of the power supply device and an input end of the battery pack in series; the output end of the power supply device is connected with an external output end; a first switch and a first thermistor are connected between the output end of the battery pack and the external output end in series; and the power supply method of using the power supply system comprises the following steps of (1) outputting DC through the external output end by adopting at least one external power supply mode; and (2) when detecting an instantaneous power failure of external power supply input, turning on the first switch within first time, and then turning on a second switch after second time and carrying out uninterrupted power supply through the battery pack. Through the DC uninterrupted power supply system and multiple power supply strategies disclosed by the invention, the reliability of DC power supply can be effectively improved and the power supply quality is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of power supply and distribution, and more specifically, the invention relates to a direct current uninterrupted power supply system and a power supply method. Background technique [0002] At present, in special vehicles or some important industrial fields, it is often necessary to provide uninterrupted power supply. In order to solve the problem of uninterrupted power supply, it is often necessary to prepare a backup power supply. When the main power supply fails, it is manually switched to the backup power supply. Although this conventional method can solve the problem of uninterrupted power supply due to the failure of the main power supply to a certain extent, this conventional uninterruptible power supply method still has problems such as insufficient reliability, difficulty in ensuring power supply quality, etc., and cannot meet the needs of special car or some important industrial fields. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J9/06
CPCH02J9/061H02J3/0073
Inventor 曾华付英杰付进军王建军王凤国董星言王艳玲吴春燕冯京京杨金波
Owner BEIJING INST OF SPACE LAUNCH TECH
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