Postpose type backup power system

Abstract

A postpose type backup power system comprises a battery backup unit and relates to each function board assembly of data information device; wherein the battery backup unit is directly connected between the input terminal of each function board assembly and the output terminal of fore power transformer of each function board assembly in parallel; when commercial electricity and the fore power transformer of each function board assembly are in normal, and commercial electricity supplies power to each function board assembly of data information device by virtue of the fore power transformer of each function board assembly and battery in the battery backup unit is charged; and when commercial electricity is abnormal or the fore power transformer at the input terminal of each function board assembly of data information device is in fault, the battery backup unit directly supplies power to each function board assembly of data information device without any intermediate conversion link. The backup power system of the invention has the advantages of high conversion efficiency, good reliability, small volume and high power and is beneficial for installation, replacement and maintenance.

Description

【Technical field】 [0001] The invention relates to a power supply system for charging a battery pack and supplying power to a load, and converting DC power input to DC power output, in particular to a backup power supply system for data information equipment such as personal computers, servers and memory. 【Background technique】 [0002] Data and information equipment such as personal computers, servers, and storage devices all require normal power supply when working. In the event of a power outage, the contents of its internal memory may disappear immediately. If it is not a normal power outage, the information in its memory will not be saved to storage devices such as hard disks in time, which will cause the information to lose its value due to complete loss or incompleteness, thus wasting a lot of work energy and time, and even causing huge losses. economic losses. For the UNIX operating system, if the system is not shut down normally, the system information in its memor...

AI Technical Summary

Problems solved by technology

[0010] ① low efficiency

[0011] From the schematic diagram of the circuit block structure, such as Figure 4 As shown, the solution is to place the UPS or SPS before the AC / DC converter, instead of directly connecting it to each functional board (mainboard or backplane) of the equipment, so that part of the energy is lost in the intermediate conversion link. , because the conversion efficiency of intermediate links is limited, the more intermediate links, the lower the overall efficiency

[0012] ② Poor reliability

[0014] ③High cost

[0015] UPS or SPS itself includes a lot of circuit functional units, complex circuits and various structures, so the material cost, design cost and manufacturing cost are all high

If you want to achieve UPS or SPS redundant backup, the cost is higher

[0016] ④Large size, occupying space

[0020] ① low efficiency

[0021] From the schematic diagram of the circuit block structure, such as Figure 5 As shown, the solution is to place the BBU before the DC / DC converter instead of directly connecting it to each functional board (mainboard or backplane) of the device, so that part of the energy will be lost in the DC / DC converter

[0022] ② Poor reliability

[0023] Because if the DC / DC converter in the middle link of the circuit fails, the subsequent circuit will lose power. Even if the BBU is normal, it cannot provide power to each functional board (main board or back board)

[0024] ③Large size, occupying space

[0026] ④difficult to maintain

[0030] Due to the limited space of each functional board, the capacity of the BBU placed directly on it is generally relatively small, and can only provide the power required by some functional circuits (mainly memory), but cannot handle the protection of other functional boards, including direct manual intervention. More business processes

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