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High-power UPS battery protection switchgear device providing bidirectional protection for charging and discharging

A technology for protecting switches and batteries, applied in battery circuit devices, circuit devices, battery disconnect circuits, etc., can solve the problems of insufficient isolation protection between batteries and UPS hosts, and achieve the effects of improving service life, saving volume and cost

Inactive Publication Date: 2020-02-11
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still insufficient in terms of battery life and isolation protection between the battery and the UPS host.

Method used

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  • High-power UPS battery protection switchgear device providing bidirectional protection for charging and discharging
  • High-power UPS battery protection switchgear device providing bidirectional protection for charging and discharging

Examples

Experimental program
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Effect test

Embodiment

[0020] Example: such as figure 1 and figure 2 As shown, a high-power UPS battery protection switchgear device that provides bidirectional protection for charging and discharging. The connection in the figure indicates the connection relationship and does not represent the specific circuit. , the switchgear main body 1 includes busbar, undervoltage release, molded case circuit breaker, load switch and fuse, the undervoltage release is connected to the busbar through the fuse, the undervoltage release is connected to the load switch, and the load switch first One terminal is connected to the busbar through a fuse, the second terminal of the load switch is connected to the DC terminal of the UPS host, and the busbar is connected to the battery through a molded case circuit breaker.

[0021] In this scheme, the molded case circuit breaker and the load switch are connected in series with 3 poles to solve the problem of insufficient insulation isolation of the single-pole working ...

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PUM

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Abstract

The invention discloses a high-power UPS battery protection switchgear device providing bidirectional protection for charging and discharging. The device is connected with a battery pack and an UPS host. The device includes a bus, an undervoltage release, a plastic case circuit breaker, a load switch, and a fuse. The undervoltage release is connected with the bus through the fuse. The undervoltagerelease is connected with the load switch. The first end of the load switch is connected with the bus through the fuse. The second end of the load switch is connected with the direct current end of the UPS host. The bus is connected with batteries through the plastic case circuit breaker. The device provided by the invention comprises the steps that the problem of insufficient insulation isolation of the unipolar operating voltage of the plastic case circuit breaker and the load switch is solved; insulation isolation under the rated operating voltage of a UPS battery is realized; the operation and bidirectional protection during charging and discharging of a single battery are realized, and at the same time the load switch and the fuse group save the volume and cost of the device; and theundervoltage release ensures that the UPS battery pack prevents over-discharge, which protects the battery pack.

Description

technical field [0001] The invention relates to the field of uninterrupted power supply distribution, in particular to a high-power UPS storage battery protection switchgear device providing charge and discharge bidirectional protection. Background technique [0002] UPS (Uninterruptible Power System), that is, uninterruptible power supply, is a constant voltage and constant frequency uninterruptible power supply with an energy storage device and an inverter as the main component. It is mainly used to provide uninterrupted power supply to a single computer, computer network system or other power electronic equipment. When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC mains voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (accident power failure) At this time, the UPS will continue to supply 220V AC power to the load through the method of inverting the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/34H02J7/00
CPCH02J7/0031H02J7/0068H02J7/34H02J9/062
Inventor 应南娇
Owner HANGZHOU DIANZI UNIV