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A power supply unit, a power supply device and a power supply system

A technology of power supply unit and power supply device, which is applied in the field of power supply, can solve the problems of shortened service life of the system, unbalanced output power, etc., and achieve the effect of maintaining the balance of output power and improving the service life

Active Publication Date: 2021-10-01
SHENZHEN WINLINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a multi-power supply output series system, when the actual load demand is greater than the output current limit of some power supplies in the system, the whole system will have the problem of unbalanced output power among different power supplies. If the whole system is in a state of unbalanced output power for a long time, will lead to a shortened service life of the entire system

Method used

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  • A power supply unit, a power supply device and a power supply system
  • A power supply unit, a power supply device and a power supply system
  • A power supply unit, a power supply device and a power supply system

Examples

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Embodiment 1

[0033] refer to figure 1 , this embodiment provides a power supply unit, the power supply unit is a first power supply unit in a power supply device, the power supply device includes the first power supply unit and at least one second power supply unit, the first power supply unit The output port of the output port and the output port of each second power supply unit are connected in series to the load, any two power supply units in the power supply unit are connected through a communication bus, and the first power supply unit is the output current limit value of the power supply unit. Smallest power unit;

[0034] The first power supply unit is used to obtain the actual output voltage of each power supply unit in the power supply device when the load demand current value is higher than the output current limit value of the first power supply unit; according to each power supply unit The actual output voltage of the actual output voltage, determine the average value of the o...

Embodiment 2

[0086] This embodiment provides a power supply device, including the power supply unit in Embodiment 1 above, the power supply unit is a first power supply unit, at least one second power supply unit, the output port of the first power supply unit and each second power supply unit The output port of the power supply unit is connected to the load after being connected in series, any two power supply units in the power supply unit are communicatively connected through a communication bus, and the first power supply unit is the power supply unit with the smallest output current limit in the power supply unit.

Embodiment 3

[0088] This embodiment provides a power supply system, including the power supply unit described in Embodiment 1 or the power supply device described in Embodiment 2 above.

[0089] Compared with the prior art, the present invention provides a power supply unit, a power supply device and a power supply system, the power supply device includes a first power supply unit and at least one second power supply unit, the output port of the first power supply unit and each second power supply unit The output ports are connected in series to the load. The power supply unit with the smallest output current limit in the power supply unit is the first power supply unit. When the load demand current value is higher than the output current limit of the first power supply unit, the first power supply unit will voltage, determine the average value of the output voltage, and send it to each second power supply unit, so that each second power supply unit can determine the same output voltage se...

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Abstract

The present invention provides a power supply unit, a power supply device, and a power supply system. The power supply unit is the first power supply unit in the power supply device. The first power supply unit is used for when the load demand current value is higher than the output current limit value of the first power supply unit. Obtain the actual output voltage of each power supply unit in the power supply unit; determine the average output voltage according to the actual output voltage of each power supply unit; send the average output voltage to each second power supply unit, and the average output voltage is used for each The second power supply unit performs the following operation: the output voltage setting value of the second power supply unit is determined according to the average value of the output voltage, and the output voltage setting values ​​determined by each second power supply unit according to the average value of the output voltage are the same. The power supply unit provided by the present invention is applied in a power supply unit with output in series, which is beneficial to maintain the output power balance of different power supply units in the power supply unit, and improves the service life of each power supply unit and the entire power supply unit and the reliability of the power supply unit.

Description

technical field [0001] The invention belongs to the field of power supply technology, and in particular relates to a power supply unit, a power supply device and a power supply system. Background technique [0002] With the development of the energy industry, the user's demand for the output voltage range of the power supply is becoming wider and wider. When the output voltage demand exceeds 2000V, it is difficult for conventional semiconductor components to meet the voltage stress requirements, and device-level series connection is required. Device-level It is difficult to design in series, so at present, the output of the power supply is usually connected in series to increase the output voltage range of the power supply. In a multi-power supply output series system, when the actual load demand is greater than the output current limit of some power supplies in the system, the whole system will have the problem of unbalanced output power among different power supplies. If t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H02M1/32
CPCH02M1/00H02M1/32
Inventor 踪成林张凯旋张海东付加友陈小平李晨光朱建国
Owner SHENZHEN WINLINE TECH
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