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Power supply method and power supply device for a power supply device

A technology of power supply device and AC power supply, which is applied in the direction of circuit device, battery circuit device, emergency power supply arrangement, etc. It can solve the problems of shortened life and aging of battery packs, so as to prolong power supply time, save maintenance workload, and improve safety and reliability. sexual effect

Active Publication Date: 2021-03-19
XJ POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a power supply method and a power supply device for a power supply device, which are used to solve the problems of aging and shortened service life of the battery pack caused by the infrequent use of the battery pack in the existing power supply mode

Method used

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  • Power supply method and power supply device for a power supply device
  • Power supply method and power supply device for a power supply device
  • Power supply method and power supply device for a power supply device

Examples

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Embodiment 1

[0040] Such as figure 1 As shown, the power supply device includes an AC power supply. The AC power of the primary grid is step-down processed by PT, and then the reduced AC is converted into DC through AC / DC. DC connection load (LOAD1, LOSD2); also includes super capacitor (SC) and battery pack (Batt), super capacitor and battery pack are connected to DC bus in parallel through DC / DC; also includes power management unit, power management unit is connected to AC / DC , each DC / DC and background management platform.

[0041] In this embodiment, the backup power source is a supercapacitor and a storage battery pack. As other implementations, it can also be a plurality of supercapacitors and a plurality of storage battery packs, which can be placed in the power cabinet.

[0042] The power management unit can manage it through the current and voltage information of the battery pack, and can perform equalized charging and floating charging, and can also discharge it according to the n...

Embodiment 2

[0047] The power supply device includes an AC power supply. The AC power of the primary grid is stepped down by PT, and then the reduced AC is converted into DC through AC / DC. The DC power is transmitted through the DC bus (DC bus), and the load is connected to the DC / DC after transmission. (LOAD1, LOSD2); it also includes a battery pack (Batt), which is connected to the DC bus through DC / DC; it also includes a power management unit, which is connected to AC / DC, each DC / DC and a background management platform.

[0048] In this embodiment, the backup power supply is a storage battery pack. As other implementations, it may also be a plurality of storage battery packs, which can be placed in the power supply cabinet.

[0049] The power management unit can manage it through the current and voltage information of the battery pack, can perform equalization charge and floating charge, and can also discharge it according to the needs of the load, so as to realize the activation of the ...

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Abstract

The invention relates to a power supply method of a power supply device and a power supply device, which can be applied to the technical field of a ring network cabinet in an intelligent distributionnetwork. The power supply method comprises the following steps: when the AC power supply is normally supplied, the AC power is converted into DC power, and the DC power is supplied to the load throughthe DC bus bar and charged on the battery pack; the DC bus voltage is acquired in real time and the DC bus voltage is judged. If DC bus voltage is less than the upper limit value of battery pack voltage, AC power supply and battery pack can supply power to load at the same time. The invention increases the cycle working times of the battery pack, realizes the activation of the battery, and prolongs the service time of the battery.

Description

technical field [0001] The invention relates to a power supply method of a power supply device and the power supply device, which can be applied to the technical field of ring network cabinets in intelligent distribution networks. Background technique [0002] With the continuous progress of the society, the rapid development of the national economy, and the widespread application of high-tech in the power system, the utilization rate of the ring network cabinet is also increasing. Therefore, the ring network cabinet as the ring network power supply terminal system is even more important. The ring network cabinet is a set of high-voltage switchgear, which is installed in a steel plate metal cabinet or made into an assembled interval ring network power supply unit. It is widely used in distribution stations in urban communities, factories and enterprises, and other load centers. As the main power equipment of the smart distribution network, the ring main unit can greatly impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J11/00H02J7/34H02J9/06
CPCH02J7/34H02J7/345H02J9/061H02J11/00
Inventor 尹强庞浩罗治军任晓丹赵启良熊泽成于越李龙光张跃杰
Owner XJ POWER CO LTD
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