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Off-line uninterruptible power supply and control method thereof

An off-line, power supply technology, applied in emergency power supply arrangement, circuit monitoring/indication, electrical components, etc., can solve the problems of reduced lifespan, reduced activity, and reduced capacity of rechargeable batteries to achieve cost reduction and high power transmission efficiency Effect

Active Publication Date: 2022-01-25
LIAN ZHENG ELECTRONICS (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause its activity to decrease, and the internal resistance will increase, and then the capacity of the rechargeable battery 16 will decline rapidly, and the life span will be greatly reduced.

Method used

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  • Off-line uninterruptible power supply and control method thereof
  • Off-line uninterruptible power supply and control method thereof
  • Off-line uninterruptible power supply and control method thereof

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0047] image 3 is a circuit diagram of the off-line uninterruptible power supply according to the first embodiment of the present invention. Such as image 3 shown, which is the same as figure 1 Basically the same, the difference is that the offline uninterruptible power supply 2 also includes a charger 28 and a third switch 29 . The third switch 29 includes a common terminal connected to the second safety switch unit 222 of the safety switch 22, a first switching terminal S1 electrically connected between the output switch 24 and the terminal L of the AC output terminal 20', and a connection with the first switch terminal S1. The common terminal of 231 is connected to the second switching terminal S2. The third switch 29 is opera...

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Abstract

The present invention provides an off-line uninterruptible power supply and its control method. The off-line uninterruptible power supply includes: a safety switch connected between an AC input terminal and an AC output terminal; a transformer whose primary side is connected to the A terminal of the AC output end; a first switch, a second switch and an output switch connected in sequence between the safety switch and the other terminal of the AC output end, the first switch is operable to make the safety switch connected to the other end of the primary side of the transformer and one of the taps, the second switch is operable such that the output switch is connected to the other end of the primary side of the transformer and one of the taps; a third switch, which operable to connect the safety switch to one of the first switch and the other terminal of the AC output; and a bi-directional converter. The off-line uninterruptible power supply of the present invention has higher power transmission efficiency.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to an off-line uninterruptible power supply and a control method thereof. Background technique [0002] Off-line uninterruptible power supply, when the mains voltage is within the normal range, the mains supply power to the load directly, and the rechargeable battery is in the charging state; when the mains voltage is abnormal or there is a power failure, the inverter switches to the working state, and The DC in the rechargeable battery is converted into a stable AC output; when the voltage of the mains is low or high, the transformer connected to the AC input is used to adjust the voltage of the mains, so that the AC output has a stable output voltage. [0003] figure 1 It is a circuit diagram of an off-line uninterruptible power supply in the prior art. Such as figure 1 As shown, the off-line uninterruptible power supply 1 includes an electromagnetic compatibility (EMC) filte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/062H02J2207/20H02J7/0049H02J7/0029H02J7/02
Inventor 胡武华邓亮
Owner LIAN ZHENG ELECTRONICS (SHENZHEN) CO LTD
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