Inverter heat-radiating device with air duct partition plates

A technology of heat sink and inverter, applied in cooling/ventilation/heating transformation, modification of power electronics, electrical components, etc., can solve the problem of uneven current flow of IGBT, and achieve the solution of uneven current flow of IGBT, uniform air volume, reduce cost effect

Pending Publication Date: 2018-03-27
BEIJING JINGYI RENEWABLE ENERGY ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to obtain a suitable structural solution to the IGBT heat dissipation problem on the basis of reducing the cost as much as possible, the invention designs an inverter heat dissipation device with an air duct partition to balance the temperature of each group of IGBTs and solve the problem of IGBT unevenness. To deal with flow problems, the following technical solutions are adopted:

Method used

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  • Inverter heat-radiating device with air duct partition plates
  • Inverter heat-radiating device with air duct partition plates
  • Inverter heat-radiating device with air duct partition plates

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown in the figure, an inverter cooling device with an air duct partition includes: a centrifugal fan 1, a fan mounting plate 2, a flow equalizing air duct 3, 3 radiator air ducts 4, 3 radiators 5 and a mounting plate 7 .

[0032] The centrifugal fan 1 is fixed under the fan mounting plate 2 by bolts, and a rubber pad is added between the centrifugal fan 1 and the fan mounting plate 2 for shock absorption. The lower end of the equalizing air duct 3 is fixed above the fan mounting plate 2 by bolts, and the upper end of the equalizing air duct 3 is fixed below the mounting plate 7 by bolts. Rubber pads are added to the joints with the mounting plate 7 for shock absorption. Both the fan mounting plate 2 and the mounting plate 7 are fixed on the main frame of the inverter by bolts. The three radiator air ducts 4 are arranged side b...

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Abstract

The invention relates to an inverter heat-radiating device with air duct partition plates, which belongs to the field of photovoltaic inverter thermal design. The inverter heat-radiating device with the air duct partition plates comprises a centrifugal fan, a fan mounting plate, a flow equalizing air duct, radiator air ducts, radiators and a mounting plate. According to the inverter heat-radiatingdevice, six IGBT of an inverter are separately arranged in three different cavities according to A, B and C phases, and the inverter heat-radiating device guarantees that the temperature of the IGBTsdoes not exceed a limit in the case of using one centrifugal fan. Meanwhile, the invention designs an air duct, which ensures air flow entering the three cavities are even, and the difference betweenthe highest temperature of the A-phase, B-phase and C-phase IGBTs is less than 2 DEG C, so that the temperature of each IGBT group is balanced and the problem of uneven current of the IGBTs is solved.

Description

technical field [0001] The invention relates to the field of thermal design of photovoltaic inverters, in particular to an inverter cooling device with an air duct partition. Background technique [0002] With the rapid development of high-power electronic devices, corresponding to the demand for light weight and miniaturization, inverters are developing in the direction of high frequency and large capacity. The heat generated by each device in the inverter continues to increase, and the degree of mutual influence between each device is also deepened. If the heat generated by each device in the inverter cannot be dissipated in time, it will inevitably lead to an increase in the operating temperature of the device. According to statistics, the failure rate of most electronic devices increases exponentially with the increase of temperature, and 55% of them are caused by temperature exceeding the limit. How to dissipate the heat generated by the electronic devices in the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH05K7/20145H05K7/20909
Inventor 黄倩林锥陈朋陈玉华高兰田史媛媛
Owner BEIJING JINGYI RENEWABLE ENERGY ENG
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