CN104202953B - The heat abstractor of a kind of photovoltaic combining inverter and heat dissipating method - Google Patents
The heat abstractor of a kind of photovoltaic combining inverter and heat dissipating method Download PDFInfo
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- CN104202953B CN104202953B CN201410495681.3A CN201410495681A CN104202953B CN 104202953 B CN104202953 B CN 104202953B CN 201410495681 A CN201410495681 A CN 201410495681A CN 104202953 B CN104202953 B CN 104202953B
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Abstract
Description
技术领域technical field
本发明涉及散热技术领域，更具体地说，特别涉及一种光伏并网逆变器中散热器与灌封电感同时散热的散热装置及散热方法。The present invention relates to the technical field of heat dissipation, and more specifically relates to a heat dissipation device and a heat dissipation method for simultaneously dissipating heat from a heat sink and a potting inductor in a photovoltaic grid-connected inverter.
背景技术Background technique
光伏并网发电系统是与电网相连并向电网输送电力的光伏发电系统。光伏并网逆变器是光伏并网发电系统的重要组成部分，用于将来自太阳能电池板的直流电转换为交流电，从而向电网输出与电网电压同频、同相的正弦交流电流。The photovoltaic grid-connected power generation system is a photovoltaic power generation system that is connected to the grid and transmits power to the grid. The photovoltaic grid-connected inverter is an important part of the photovoltaic grid-connected power generation system. It is used to convert the direct current from the solar panel into alternating current, so as to output a sinusoidal alternating current with the same frequency and phase as the grid voltage to the grid.
目前，通常大功率的光伏并网逆变器需要很大的灌封电感进行滤波作用，但往往灌封电感发热量很大，很多光伏企业没有进行很好的散热，当使用时间比较长时就会影响到光伏并网逆变器的使用寿命，以及机器的使用性能，例如：在长时间使用后，由于波型的影响会造成炸机可能性，因此，如何设计一种保证灌封电感散热的散热装置，就显得非常有必要。At present, usually high-power photovoltaic grid-connected inverters require a large potting inductor for filtering, but often the potting inductor generates a lot of heat, and many photovoltaic companies do not perform good heat dissipation. When used for a long time It will affect the service life of the photovoltaic grid-connected inverter and the performance of the machine. For example, after a long time of use, the influence of the wave pattern will cause the possibility of bombing. Therefore, how to design a method to ensure the heat dissipation of the potted inductor A cooling device is very necessary.
发明内容Contents of the invention
本发明的目的在于提供一种可保证光伏并网逆变器中散热器与灌封电感同时散热的散热装置及散热方法。The purpose of the present invention is to provide a heat dissipation device and a heat dissipation method that can ensure simultaneous heat dissipation of the heat sink and the potting inductor in the photovoltaic grid-connected inverter.
为了达到上述目的，本发明采用的技术方案如下：In order to achieve the above object, the technical scheme adopted in the present invention is as follows:
一种光伏并网逆变器的散热装置，包括用于安装光伏并网逆变器中发热模块的散热器，设于散热器下端的防水风扇组件，设于防水风扇组件下端的封闭低压腔体，设于封闭低压腔体下端的灌封电感组件，以及用于向灌封电感组件提供冷风的进风装置。A heat dissipation device for a photovoltaic grid-connected inverter, including a radiator for installing a heating module in a photovoltaic grid-connected inverter, a waterproof fan assembly arranged at the lower end of the radiator, and a closed low-voltage cavity arranged at the lower end of the waterproof fan assembly , the potted inductance component located at the lower end of the closed low-voltage cavity, and the air inlet device for providing cold air to the potted inductance component.
优选地，所述散热器和防水风扇组件的两侧分别设有散热器左挡板和散热器右挡板，所述散热器和防水风扇组件的背面还设有挂板，所述封闭低压腔体由防水风扇组件、散热器左挡板、散热器右挡板和挂板围成。Preferably, both sides of the radiator and waterproof fan assembly are respectively provided with a radiator left baffle and a radiator right baffle, and the back of the radiator and waterproof fan assembly is also provided with a hanging plate, and the closed low-pressure chamber The body is surrounded by waterproof fan assembly, radiator left baffle, radiator right baffle and hanging plate.
优选地，所述进风装置包括设于灌封电感组件两侧的侧左进风板和侧右进风板，以及设于灌封电感组件底部的底部进风板。Preferably, the air inlet device includes side left air inlet plates and side right air inlet plates arranged on both sides of the potted inductance component, and a bottom air inlet plate arranged at the bottom of the potted inductance component.
优选地，所述防水风扇组件包括三个防水风扇，以及设于三个防水风扇之间的隔离板。Preferably, the waterproof fan assembly includes three waterproof fans, and an isolation plate arranged between the three waterproof fans.
优选地，所述灌封电感组件由多个采用灌封胶密封的电感组成。Preferably, the potting inductance component is composed of a plurality of inductances sealed with potting glue.
优选地，所述光伏并网逆变器中的发热模块包括大功率模块以及IGBT模块。Preferably, the heating module in the photovoltaic grid-connected inverter includes a high-power module and an IGBT module.
本发明还提供一种光伏并网逆变器的散热方法，该方法包括以下步骤：The present invention also provides a cooling method for a photovoltaic grid-connected inverter, the method comprising the following steps:
S1、光伏并网逆变器启动时，散热器自然散热，灌封电感组件通过进风装置进入的冷风进行自然散热；S1. When the photovoltaic grid-connected inverter is started, the radiator will dissipate heat naturally, and the potted inductor components will dissipate heat naturally through the cold air entering the air inlet device;
S2、当光伏并网逆变器的温度达到一设定值时，防水风扇组件启动，对散热器强制风冷散热，此时封闭低压腔体内的压力降低，进风装置加强向灌封电感组件流入冷风，实现了散热器与灌封电感组件的同时散热。S2. When the temperature of the photovoltaic grid-connected inverter reaches a set value, the waterproof fan assembly starts, and the radiator is forced to cool and dissipate heat. At this time, the pressure in the closed low-voltage cavity decreases, and the air inlet device strengthens the potting inductance assembly. The cold air flows in to realize the simultaneous heat dissipation of the radiator and the potted inductance component.
与现有技术相比，本发明的优点在于：本发明通过散热器、防水风扇组件、封闭低压腔体和灌封电感组件的布置，可在散热器温度达到一定温度时实现散热器与灌封电感组件的同时散热。Compared with the prior art, the advantage of the present invention is that the present invention can realize the heat sink and potting when the temperature of the heat sink reaches a certain temperature through the arrangement of the heat sink, the waterproof fan assembly, the closed low-voltage cavity and the potting inductance assembly. Simultaneous heat dissipation of inductive components.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1是本发明所述光伏并网逆变器的散热装置的主视图。Fig. 1 is a front view of a heat sink of a photovoltaic grid-connected inverter according to the present invention.
图2是本发明所述光伏并网逆变器的散热装置的立体图。Fig. 2 is a perspective view of the cooling device of the photovoltaic grid-connected inverter according to the present invention.
图3是本发明所述光伏并网逆变器的散热方法的流程图。Fig. 3 is a flow chart of the heat dissipation method of the photovoltaic grid-connected inverter according to the present invention.
附图标记说明：10、散热器，11、挂板，12、散热器左挡板，13、侧左进风板，14、灌封电感组件，15、底部进风板，16、散热器右挡板，17、防水风扇组件，18、侧右进风板。Explanation of reference signs: 10, radiator, 11, hanging plate, 12, left baffle plate of radiator, 13, side left air inlet plate, 14, potting inductance component, 15, bottom air inlet plate, 16, right radiator Baffle plate, 17, waterproof fan assembly, 18, side right air inlet plate.
具体实施方式detailed description
下面结合附图对本发明的优选实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
参阅图1和图2所示，本实施例提供的一种光伏并网逆变器的散热装置，包括用于安装光伏并网逆变器中发热模块的散热器10，设于散热器10下端的防水风扇组件17，设于防水风扇组件17下端的封闭低压腔体，设于封闭低压腔体下端的灌封电感组件14，以及用于向灌封电感组件14提供冷风的进风装置。Referring to Fig. 1 and Fig. 2, a cooling device for a photovoltaic grid-connected inverter provided in this embodiment includes a radiator 10 for installing a heating module in a photovoltaic grid-connected inverter, which is arranged at the lower end of the radiator 10 The waterproof fan assembly 17, the closed low-pressure cavity located at the lower end of the waterproof fan assembly 17, the potting inductor assembly 14 located at the lower end of the closed low-pressure cavity, and an air intake device for providing cold wind to the potting inductor assembly 14.
具体的，在本发明中，所述的散热器10和防水风扇组件17的两侧分别设有散热器左挡板12和散热器右挡板16，所述的散热器10和防水风扇组件17的背面还设有挂板11，所述的封闭低压腔体由防水风扇组件17、散热器左挡板12、散热器右挡板16和挂板11围成。Specifically, in the present invention, the two sides of the radiator 10 and the waterproof fan assembly 17 are respectively provided with a radiator left baffle 12 and a radiator right baffle 16, and the radiator 10 and the waterproof fan assembly 17 The back side is also provided with a hanging plate 11, and the closed low-pressure cavity is surrounded by a waterproof fan assembly 17, a radiator left baffle 12, a radiator right baffle 16 and a hanging plate 11.
具体的，在本发明中，所述的进风装置包括设于灌封电感组件14两侧的侧左进风板13和侧右进风板18，以及设于灌封电感组件14底部的底部进风板15。Specifically, in the present invention, the air inlet device includes a side left air inlet plate 13 and a side right air inlet plate 18 arranged on both sides of the potting inductance component 14, and a bottom part arranged at the bottom of the potting inductance component 14 Air intake plate 15.
作为优选，本发明中所述的防水风扇组件17包括三个防水风扇(图未示)，以及设于三个防水风扇之间的隔离板(图未示)。Preferably, the waterproof fan assembly 17 of the present invention includes three waterproof fans (not shown in the figure), and an isolation plate (not shown in the figure) arranged between the three waterproof fans.
作为优选，本实施例中所述的灌封电感组件14由多个采用灌封胶密封的电感组成。Preferably, the potting inductor component 14 in this embodiment is composed of multiple inductors sealed with potting glue.
作为优选，本实施例中所述的光伏并网逆变器中的发热模块包括大功率模块以及IGBT模块。Preferably, the heating module in the photovoltaic grid-connected inverter described in this embodiment includes a high-power module and an IGBT module.
本发明的光伏并网逆变器的散热装置的散热方法具体包括以下步骤：The heat dissipation method of the heat dissipation device of the photovoltaic grid-connected inverter of the present invention specifically includes the following steps:
第一步、光伏并网逆变器启动时，散热器10自然散热(通过热量的流动方向时行自然散热)，灌封电感组件14通过进风装置(即侧左进风板13、底部进风板15、侧右进风板18)进入的冷风进行自然散热；Step 1: When the photovoltaic grid-connected inverter is started, the radiator 10 dissipates heat naturally (through the flow direction of heat), and the potting inductance component 14 passes through the air inlet device (that is, the side left air inlet plate 13, the bottom air inlet The cold wind that air plate 15, side right air inlet plate 18) enters carries out natural heat dissipation;
第二步、当光伏并网逆变器的温度达到一设定值时(可根据不同光伏并网逆变器进行设定)，防水风扇组件17启动，对散热器10强制风冷散热；此时封闭低压腔体内的压力降低，进风装置(即侧左进风板13、底部进风板15、侧右进风板18)加强向灌封电感组件14流入冷风，实现了散热器10与灌封电感组件14的同时散热。也就是说：由于风压的推动下，侧左进风板13、侧右进风板18、底部进风板15，三个方向的冷风加强进入灌封电感14流动带走表面的热量，而由防水风扇组件17将交汇的冷热风强制散热器10时行散热，达到了两个热源体同时散热的良好效果，保证机器的寿命。In the second step, when the temperature of the photovoltaic grid-connected inverter reaches a set value (which can be set according to different photovoltaic grid-connected inverters), the waterproof fan assembly 17 starts to force the radiator 10 to cool and dissipate heat; When the pressure in the closed low-pressure chamber decreases, the air inlet device (i.e., the side left air inlet plate 13, the bottom air inlet plate 15, and the side right air inlet plate 18) strengthens the flow of cold air into the potting inductance component 14, realizing the radiator 10 and Dissipate heat while potting the inductance component 14 . That is to say: due to the promotion of wind pressure, the cold wind from the three directions enters the potting inductor 14 to flow and take away the heat on the surface, and the left side air inlet plate 13, the side right air inlet plate 18, and the bottom air inlet plate 15 strengthen Waterproof fan assembly 17 forces the heat sink 10 to dissipate the converging hot and cold air, which achieves a good effect of simultaneous heat dissipation of two heat source bodies and ensures the life of the machine.
在本发明中，对于散热装置中防水风扇组件17的控制，可采用申请人在先申请的专利201410259456.X所公开的关于风扇工作控制的方案，在此不再进行赘述。In the present invention, for the control of the waterproof fan assembly 17 in the heat dissipation device, the solution about the fan operation control disclosed in the applicant's prior application of patent 201410259456.X can be adopted, and will not be repeated here.
虽然结合附图描述了本发明的实施方式，但是专利所有者可以在所附权利要求的范围之内做出各种变形或修改，只要不超过本发明的权利要求所描述的保护范围，都应当在本发明的保护范围之内。Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, the patent owner can make various deformations or modifications within the scope of the appended claims, as long as they do not exceed the scope of protection described in the claims of the present invention, all should Within the protection scope of the present invention.
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| CN107863241B (en) * | 2017-12-04 | 2024-04-09 | 苏州腾冉电气设备股份有限公司 | Inductance assembly for distributed photovoltaic system |
| CN112104195A (en) * | 2020-09-09 | 2020-12-18 | 青岛鼎信通讯股份有限公司 | Device current conversion module structural design is administered to high protection low voltage |
| CN114760810A (en) * | 2022-03-17 | 2022-07-15 | 深圳市科米泰客科技有限公司 | Energy storage power supply |
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| JP2000013071A (en) * | 1998-06-18 | 2000-01-14 | Nippon Inter Electronics Corp | Heat radiator |
| CN201690342U (en) * | 2010-02-03 | 2010-12-29 | 上海航锐电源科技有限公司 | Inverter air-cooled heat dissipation system structure |
| CN103187893A (en) * | 2011-12-31 | 2013-07-03 | 上海亿福新能源技术有限公司 | Cooling structure and cooking method of photovoltaic (PV) inverter |
| CN203491876U (en) * | 2013-09-29 | 2014-03-19 | 上海华兴数字科技有限公司 | General frequency converter structure |
| CN203504446U (en) * | 2013-09-03 | 2014-03-26 | 特变电工新疆新能源股份有限公司 | Novel heat radiation structure of photovoltaic inverter |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000013071A (en) * | 1998-06-18 | 2000-01-14 | Nippon Inter Electronics Corp | Heat radiator |
| CN201690342U (en) * | 2010-02-03 | 2010-12-29 | 上海航锐电源科技有限公司 | Inverter air-cooled heat dissipation system structure |
| CN103187893A (en) * | 2011-12-31 | 2013-07-03 | 上海亿福新能源技术有限公司 | Cooling structure and cooking method of photovoltaic (PV) inverter |
| CN203504446U (en) * | 2013-09-03 | 2014-03-26 | 特变电工新疆新能源股份有限公司 | Novel heat radiation structure of photovoltaic inverter |
| CN203491876U (en) * | 2013-09-29 | 2014-03-19 | 上海华兴数字科技有限公司 | General frequency converter structure |
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Address after: 510663 Guangzhou high tech Industrial Development Zone, Guangdong Science City, litchi Road, No. 9 Patentee after: GUANGZHOU SANJING ELECTRIC Co.,Ltd. Address before: 510663 Guangzhou high tech Industrial Development Zone, Guangdong Science City, litchi Road, No. 9 Patentee before: GUANGZHOU SANJING ELECTRIC Co.,Ltd. |
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Granted publication date: 20160824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |