TW201546603A - Power conversion device - Google Patents

Abstract

The present invention aims to provide a power conversion device, which can ensure heat dissipation of other elements while ensuring heat dissipation of a reactor. The power conversion device is constituted such that the power conversion device converts DC current to AC current by a plurality of switch elements then supplying it to an output line, and a filter circuit at least having the reactor and capacitor is interpose between the output line, so that high-frequency components of the AC current can be attenuated. The power conversion device comprises: a case, protruding from inside to outside of a housing via an opening, and accommodating the reactor; and a covering member, having an aperture for pulling out the output line connected to a plurality of the switching elements, and disposed between the housing and the case so as to cover the opening. The plurality of switching elements are disposed inside the housing with a position shift from the position of the case, and a heat insulation is at least formed between the case and the housing opposing to each other.

Description

電力變換裝置 Power converter

本發明係有關電力變換裝置。 The present invention relates to a power conversion device.

以往已被提出有將直流電力變換成交流電力的電力變換裝置。該種電力變換裝置係藉由PWM(脈寬調變)控制而使架橋連接的複數個開關元件(電力模組)導通(ON)/關斷(OFF)以產生交流電力。此時，由於電力模組(power module)或該等電力模組之周邊的電抗器(例如升壓電路的直流電抗器、或濾波器電路的交流電抗器)等會被大電流流動而發熱，因此，在電力變換裝置需要有散熱構造。 A power conversion device that converts DC power into AC power has been proposed in the past. In the power conversion device, a plurality of switching elements (power modules) connected by a bridge are turned ON/OFF by PWM (Pulse Width Modulation) control to generate AC power. At this time, a power module or a reactor around the power modules (for example, a DC reactor of a booster circuit or an AC reactor of a filter circuit) may be heated by a large current to generate heat. Therefore, a heat dissipation structure is required in the power conversion device.

就上述之散熱構造而言，已被提出有以下構造：於設置有用以將框體分離為內部電路部與管道(duct)部的間隔板，且具備有將電力模組的熱予以散熱的冷卻散熱片(fin)、將散熱片予以冷卻的冷卻風扇、以及電抗器的馬達控制裝置(電力變換裝置)中，建構成：於間隔板設有貫通孔，將電抗器之線圈及鐵芯予以***貫通孔並配置於管道內，並且藉由冷卻風扇而將同樣配置在管道內的冷卻散熱片和電抗器一起冷卻(專利文獻1)。 In the above-described heat dissipation structure, a structure has been proposed in which a partition plate for separating the frame into an internal circuit portion and a duct portion is provided, and cooling is provided to dissipate heat of the power module. A heat sink (fin), a cooling fan that cools the heat sink, and a motor control device (power conversion device) for the reactor are configured such that a through hole is formed in the partition plate, and the coil and the iron core of the reactor are inserted. The through hole is disposed in the duct, and the cooling fins and the reactor also disposed in the duct are cooled by the cooling fan (Patent Document 1).

此外，已被提出有以壓鑄(die cast)加工而將 具有冷卻散熱片的凹陷部一體成形於框體，且於該凹陷部配置電抗器而進行電抗器的散熱，並且將框體作成密閉構造而將電抗器密閉於框體內的電力變換裝置(專利文獻2)。 In addition, it has been proposed to be processed by die casting. A power conversion device in which a recessed portion having a cooling fin is integrally formed in a casing, and a reactor is disposed in the recessed portion to dissipate heat of the reactor, and the casing is sealed to seal the reactor in the casing (Patent Literature) 2).

(先前技術文獻) (previous technical literature) (專利文獻) (Patent Literature)

專利文獻1：日本國特開2010-130779號公報 Patent Document 1: Japanese Patent Laid-Open Publication No. 2010-130779

專利文獻2：美國專利申請案公開第2008/0291632號說明書 Patent Document 2: US Patent Application Publication No. 2008/0291632

然而，如專利文獻1的情形，將電抗器設置於管道部的情況，電抗器會朝框體外露出，而有造成短路等原因的情形。此外，如專利文獻2所記載的構成存在有電抗器的熱經由凹陷部傳導而傳導到已安裝在框體之其他的散熱元件，致使該其他的散熱元件的散熱效果變差的課題。 However, as in the case of Patent Document 1, in the case where the reactor is provided in the duct portion, the reactor is exposed to the outside of the casing, which may cause a short circuit or the like. Further, in the configuration described in Patent Document 2, the heat of the reactor is conducted through the recessed portion and is conducted to the other heat dissipating member mounted on the housing, which causes a problem that the heat dissipating effect of the other heat dissipating member is deteriorated.

本發明即是鑒於上述習知問題而完成者，目的在於提供一種可一邊確保其他的散熱元件的散熱，且一邊確保電抗器之散熱的電力變換裝置。 The present invention has been made in view of the above conventional problems, and it is an object of the invention to provide a power conversion device capable of ensuring heat dissipation of another heat dissipating element while ensuring heat dissipation of the reactor.

本發明之電力變換裝置，係構成為使用複數個開關元件而將直流電力變換成交流電力後供給至輸出線，並且使至少具有電抗器及電容器之濾波器電路介設於 該輸出線，而使前述交流電力所包含的高頻成分衰減，其特點係具備有：盒體，係從框體的內側朝向外側並透過開口突出，且收容前述電抗器；以及覆蓋構件，係具有可供連接到前述複數個開關元件之前述輸出線拉出的孔，而且設於前述框體與前述盒體之間且覆蓋前述開口；將前述複數個開關元件以與前述盒體錯開位置之方式配置於前述框體內之內側，並且至少將前述盒體與前述框體相對向之間予以隔熱。 The power conversion device according to the present invention is configured to convert DC power into AC power using a plurality of switching elements, supply the power to the output line, and apply a filter circuit having at least a reactor and a capacitor to the filter circuit. The output line is configured to attenuate the high-frequency component included in the AC power, and is characterized in that the casing includes a casing that protrudes from the inner side of the casing toward the outside through the opening, and houses the reactor; and the covering member a hole having the output line that can be connected to the plurality of switching elements, and is disposed between the frame body and the casing and covering the opening; and the plurality of switching elements are offset from the casing The method is disposed on the inner side of the casing, and at least thermally insulates the casing from the casing.

本發明之電力變換裝置的目地係在於提供一種可一邊確保其他的散熱元件的散熱，且一邊確保電抗器之散熱的電力變換裝置。 The power conversion device of the present invention is intended to provide a power conversion device that can ensure heat dissipation of other heat dissipating components while ensuring heat dissipation of the reactor.

1‧‧‧電力變換裝置 1‧‧‧Power conversion device

2a至2d‧‧‧太陽電池 2a to 2d‧‧‧ solar cells

3a至3d‧‧‧開閉器 3a to 3d‧‧‧Openers

4‧‧‧升壓電路 4‧‧‧Boost circuit

5‧‧‧反向器電路 5‧‧‧Inverter circuit

6‧‧‧濾波器電路 6‧‧‧Filter circuit

7‧‧‧繼電器 7‧‧‧ Relay

8‧‧‧商用電力系統 8‧‧‧Commercial power system

9‧‧‧控制裝置 9‧‧‧Control device

10‧‧‧框體 10‧‧‧ frame

11‧‧‧上壁 11‧‧‧Upper wall

12‧‧‧下壁 12‧‧‧ Lower wall

13‧‧‧左壁 13‧‧‧ left wall

14‧‧‧右壁 14‧‧‧ right wall

15‧‧‧底部 15‧‧‧ bottom

16‧‧‧基板 16‧‧‧Substrate

17、32‧‧‧孔 17, 32‧ ‧ holes

19‧‧‧襯墊 19‧‧‧ cushion

21‧‧‧端子 21‧‧‧ terminals

30‧‧‧安裝構件 30‧‧‧Installation components

33‧‧‧第1襯墊 33‧‧‧1st pad

34‧‧‧第2襯墊 34‧‧‧2nd pad

36‧‧‧凸部 36‧‧‧ convex

37‧‧‧肋柱 37‧‧‧ ribs

40‧‧‧盒體 40‧‧‧Box

IPM‧‧‧開關模組 IPM‧‧‧ switch module

F1、F2‧‧‧散熱片 F1, F2‧‧‧ heat sink

L‧‧‧輸出線 L‧‧‧ output line

G‧‧‧保護構件 G‧‧‧protective components

H‧‧‧開口 H‧‧‧ openings

S‧‧‧間隙 S‧‧‧ gap

第1圖係本實施例之電力變換裝置的電路圖。 Fig. 1 is a circuit diagram of a power conversion device of the present embodiment.

第2圖係本實施例之電力變換裝置的正面圖。 Fig. 2 is a front elevational view showing the power conversion device of the embodiment.

第3圖(a)及(b)係本實施例之電力變換裝置之背面側的斜視圖。 Fig. 3 (a) and (b) are perspective views of the back side of the power conversion device of the present embodiment.

第4圖係本實施例之收容有電抗器之盒體的分解斜視圖。 Fig. 4 is an exploded perspective view showing the casing in which the reactor is housed in the embodiment.

第5圖係本實施例之電力變換裝置之右側面的簡略圖。 Fig. 5 is a schematic view showing the right side surface of the power conversion device of the present embodiment.

本實施形態係藉由將收容電抗器之盒體與收容其他的散熱元件(例如：反向器電路)之框體之間予以隔熱，而使電抗器之熱不易傳導至其他的散熱元件，可一 邊確保其他的散熱元件的散熱，且一邊確保電抗器的散熱。 In the present embodiment, the heat of the reactor is hardly conducted to other heat dissipating components by insulating the casing that houses the reactor from the casing that houses another heat dissipating component (for example, an inverter circuit). One can Ensure heat dissipation from other heat sink components while ensuring heat dissipation from the reactor.

<實施例1> <Example 1>

如第1圖所示，電力變換裝置1具備有：開閉器3a至3d、升壓電路4、反向器(inverter，依中華民國國立教育研究院電子計算機名詞工具書稱為反向器，亦有稱為反用換流器之情形)電路5、濾波器電路6、系統耦合用中繼器7、以及控制電路9，且將複數的直流電源(在此係有太陽電池2a至2d的4個)輸出的直流電力變換成與商用電力系統8同步的交流電力，並且將該交流電力疊加於商用電力系統8。 As shown in Fig. 1, the power conversion device 1 includes: a shutter 3a to 3d, a booster circuit 4, and an inverter (inverter, according to the National Computer Research Institute of the Republic of China, the electronic computer noun tool is called an inverter, There are a circuit called a reverse inverter, a circuit 5, a filter circuit 6, a system coupling repeater 7, and a control circuit 9, and a plurality of DC power sources (here, there are 4 solar cells 2a to 2d). The output DC power is converted into AC power synchronized with the commercial power system 8, and the AC power is superimposed on the commercial power system 8.

太陽電池2a至2d輸出的直流電力分別透過開閉器3a至3d後並總合地輸入升壓電路4。開閉器3a至3d係在進行保養等情形時斷開，而將太陽電池2a至2d供給至電力變換裝置1(升壓電路4以後的電路)的直流電力予以遮斷。 The DC power output from the solar cells 2a to 2d passes through the shutters 3a to 3d, respectively, and is collectively input to the booster circuit 4. The shutters 3a to 3d are disconnected when maintenance is performed, and the DC power supplied to the power conversion device 1 (the circuit after the booster circuit 4) is blocked by the solar cells 2a to 2d.

升壓電路4係藉由以直流電抗器DCL、開關元件、二極體、電容器所構成的非絕緣型截波器電路來構成。升壓電路4將藉由預定的頻率而使開關元件進行導通/關斷動作所輸入之直流電力的電壓升壓到所期望的電壓並輸出至反向器電路5。 The booster circuit 4 is constituted by a non-isolated type chopper circuit including a DC reactor DCL, a switching element, a diode, and a capacitor. The booster circuit 4 boosts the voltage of the DC power input by the switching element in the on/off operation by a predetermined frequency to a desired voltage and outputs it to the inverter circuit 5.

反向器電路5係由複數個開關元件架橋連接所獲得的電路所構成，一邊藉由PWM控制而使該等開關元件的工作週期(on duty)變動，一邊使該等開關元件周 期性地進行導通/關斷動作，藉此，將直流電力變換成與商用電力系統同步的交流電力。經變換後的交流電力被供給至連接在開關元件與商用電力系統之間的輸出線L。此外，反向器電路5的構成並不限於架橋連接而也可為使用中性點箝位方式等。 The inverter circuit 5 is composed of a circuit obtained by bridging a plurality of switching elements, and the duty cycle of the switching elements is changed by PWM control while the switching elements are turned on. The ON/OFF operation is performed periodically, whereby the DC power is converted into AC power synchronized with the commercial power system. The converted AC power is supplied to an output line L connected between the switching element and the commercial power system. Further, the configuration of the inverter circuit 5 is not limited to the bridging connection, and the neutral point clamping method or the like may be used.

濾波器電路6係由介設於輸出線L的交流電抗器ACL及電容器所構成，用以衰減反向器電路5輸出的交流電力的高頻成分。經衰減高頻成分後的交流電力透過系統連繫用中繼器7而疊加於商用電力系統。 The filter circuit 6 is composed of an AC reactor ACL and a capacitor interposed in the output line L, and attenuates the high-frequency component of the AC power output from the inverter circuit 5. The AC power that has been attenuated by the high-frequency component is superimposed on the commercial power system through the system connection repeater 7.

控制電路9由微電腦等所構成，用以進行升壓電路4或反向器電路5之開關元件之導通/關斷動作的控制。 The control circuit 9 is constituted by a microcomputer or the like for controlling the on/off operation of the switching elements of the booster circuit 4 or the inverter circuit 5.

如第2圖第3圖所示，構成該等電力變換裝置1的電力零件係被收容在框體10的內部。在此說明，第3圖(a)係電力變換裝置之背面側的斜視圖，第3圖(b)係將盒體40(將於後述)從框體10分離之時之背面側的斜視圖。 As shown in FIG. 2 and FIG. 3, the power components constituting the power conversion device 1 are housed inside the casing 10. Here, Fig. 3(a) is a perspective view of the back side of the power conversion device, and Fig. 3(b) is a perspective view of the back side when the case 40 (to be described later) is separated from the casing 10. .

反向器電路5之包含複數個開關元件等之開關模組IMP係直接安裝於框體10的底部15，除此之外的電子零件係分開來裝設於複數個基板16而安裝於框體10。此外，直流電抗器DCL或交流電抗器ACL係配置於朝向框體10之外側突出之盒體40(詳細內容將於後述)。 The switch module IMP including the plurality of switching elements and the like of the inverter circuit 5 is directly mounted on the bottom portion 15 of the casing 10, and the other electronic components are separately mounted on the plurality of substrates 16 and mounted on the casing. 10. Further, the DC reactor DCL or the AC reactor ACL is disposed on the casing 40 that protrudes toward the outside of the casing 10 (details will be described later).

框體10具有大致長方體形狀，係將上壁11、下壁12、左壁13、右壁14、底部15等的鋁合金藉由壓鑄加工而作成一體成形。電力變換裝置1之以上壁11、 下壁12、左壁13、右壁14形成的之正面側的緣部安裝有橡膠製的襯墊19，藉著將正面蓋對著該襯墊19按壓並予以封閉而確保框體10與正面蓋之間的密閉性。又，於上壁11、下壁12、左壁13、右壁14安裝有保護(guard)構件G。此外，為了便於瞭解，第3圖係顯示拆下保護構件G後的圖。 The casing 10 has a substantially rectangular parallelepiped shape, and the aluminum alloys such as the upper wall 11, the lower wall 12, the left wall 13, the right wall 14, and the bottom 15 are integrally formed by die casting. The upper wall 11 of the power conversion device 1, A rubber pad 19 is attached to the edge portion on the front side of the lower wall 12, the left wall 13, and the right wall 14, and the frame 10 and the front surface are secured by pressing and closing the front cover against the pad 19. The tightness between the covers. Further, a guard member G is attached to the upper wall 11, the lower wall 12, the left wall 13, and the right wall 14. Further, for the sake of easy understanding, Fig. 3 shows a view in which the protective member G is removed.

框體10之內側的底部15的中央配置有開關模組IPM(由於被基板16遮住而在第2圖以虛線表示)，而於框體10的外側設置有用以供開關模組IPM散熱的散熱片F1。又，於框體10的底部15以位置與開關模組IPM錯開之方式，隔著散熱片F1設置有2個孔17。於框體10之底部15的外側，且於左壁13側之孔的位置設置有與框體10之底部15相對向且可供直流電抗器DCL配置的盒體40。又，於框體10之底部15的外側，且於右壁14側之孔17的位置設置有與框體10之底部15相對向且可供交流電抗器ACL配置的盒體40。該等盒體40係由框體10的內側朝向外側而透過開口H突出。 A switch module IPM (shown by a broken line in FIG. 2) is disposed in the center of the bottom portion 15 on the inner side of the casing 10, and is provided on the outer side of the casing 10 for heat dissipation of the switch module IPM. Heat sink F1. Further, two holes 17 are provided in the bottom portion 15 of the casing 10 so as to be displaced from the switch module IPM by the heat sink F1. On the outer side of the bottom portion 15 of the casing 10, and at the position of the hole on the left wall 13 side, a casing 40 which is opposed to the bottom portion 15 of the casing 10 and which is configurable by the DC reactor DCL is provided. Further, on the outer side of the bottom portion 15 of the casing 10, and at the position of the hole 17 on the right wall 14 side, a casing 40 which is opposed to the bottom portion 15 of the casing 10 and which is configurable by the AC reactor ACL is provided. The casing 40 protrudes through the opening H from the inner side of the casing 10 toward the outer side.

於框體10之底部15之左壁13側之直流電抗器DCL的下側配置有開閉器3a至3d，而於底部15之右壁14側之交流電抗器ACL的下側配置有用以輸出交流電力的端子21。 The shutters 3a to 3d are disposed on the lower side of the DC reactor DCL on the left wall 13 side of the bottom portion 15 of the casing 10, and the lower side of the AC reactor ACL on the right wall 14 side of the bottom portion 15 is configured to output an AC. Terminal 21 for electricity.

接著，說明交流電抗器ACL之具體的配置。此外，由於直流電抗器DCL與交流電抗器ACL係同樣地配置，所以省略其說明。 Next, a specific configuration of the AC reactor ACL will be described. In addition, since the DC reactor DCL is disposed in the same manner as the AC reactor ACL, the description thereof will be omitted.

交流電抗器ACL係藉由緊固螺釘等而安裝於盒體40之中。盒體40係呈具有開口之大致長方體狀的形狀，從該開口H收容交流電抗器ACL，將交流電抗器ACL以緊固螺釘固定於盒體40之後，將熱傳導性良好的樹脂填充於盒體40內。又，於盒體40的外側設置有複數個散熱片F2，藉由樹脂及該等散熱片F2而使電抗器所發出的熱發散出。 The AC reactor ACL is attached to the casing 40 by fastening screws or the like. The casing 40 has a substantially rectangular parallelepiped shape having an opening, and the AC reactor ACL is housed in the opening H, and the AC reactor ACL is fixed to the casing 40 by fastening screws, and the resin having good thermal conductivity is filled in the casing. 40 inside. Further, a plurality of fins F2 are provided on the outer side of the casing 40, and the heat generated by the reactor is radiated by the resin and the fins F2.

於該盒體40與框體10之間配置有板狀的安裝構件30。安裝構件30覆蓋盒體40之開口，並且藉由緊固螺釘又與盒體40一起配置於框體10。於盒體40與安裝構件30之間，隔著並配置有著厚度1mm程度之熱傳導性低而具有隔熱性之矽氧橡膠(silicone rubber)等之橡膠製的第1襯墊33。 A plate-shaped mounting member 30 is disposed between the casing 40 and the casing 10. The mounting member 30 covers the opening of the case 40 and is disposed on the frame 10 together with the case 40 by fastening screws. Between the casing 40 and the attachment member 30, a rubber first gasket 33 having a heat conductivity of about 1 mm and having a heat insulating property such as silicone rubber is disposed.

於安裝構件30設置有用以供交流電抗器ACL之配線(輸出線L)通過之圓形的孔32，孔32的周圍形成有由盒體40朝框體10側突出約5mm的凸部36(間隔件(spacer))。又，凸部36的內側緣部形成有比凸部36還高的肋柱37。此等盒體40及安裝構件30係可與框體10同樣地將鋁合金等予以壓鑄加工而獲得。 A circular hole 32 through which the wiring (output line L) of the AC reactor ACL passes is provided in the mounting member 30, and a convex portion 36 which protrudes from the casing 40 toward the side of the casing 10 by about 5 mm is formed around the hole 32 ( Spacer). Further, the inner edge portion of the convex portion 36 is formed with a rib 37 higher than the convex portion 36. The case 40 and the attachment member 30 can be obtained by die-casting an aluminum alloy or the like in the same manner as the frame 10.

將安裝構件30配置於框體10時，肋柱37係被崁入孔17而構成安裝構件30的定位。又，於該凸部36與框體10之間，隔著並配置有著厚度1mm程度之熱傳導性低之矽氧橡膠等之橡膠製的第2襯墊34。此外，凸部36(間隔件)係可設置於框體10側，也可設置在其他構件。 When the mounting member 30 is placed on the housing 10, the ribs 37 are inserted into the holes 17 to constitute the positioning of the mounting member 30. Further, a rubber second spacer 34 having a low thermal conductivity of about 1 mm and having a low thermal conductivity between the convex portions 36 and the frame 10 is disposed. Further, the convex portion 36 (spacer) may be provided on the side of the casing 10 or may be provided on another member.

如上所述，本實施形態中，藉由凸部36及第2襯墊34而可在框體10與安裝構件30(盒體40)之間形成約5mm至6mm程度的間隙S(空氣的隔熱層)(參考第5圖)，因此可獲得於框體10與盒體40之間藉由空氣所達到的隔熱效果。所以，交流電抗器ACL之熱不易傳導至其他的散熱元件(例如，構成反向器電路之開關元件等)，而能確保其他的散熱元件的散熱。又，可由於盒體40的散熱片F2而確保交流電抗器ACL的散熱。 As described above, in the present embodiment, by the convex portion 36 and the second spacer 34, a gap S of about 5 mm to 6 mm can be formed between the casing 10 and the attachment member 30 (the casing 40) (air separation) The thermal layer) (refer to Fig. 5), so that the heat insulation effect achieved by the air between the frame 10 and the casing 40 can be obtained. Therefore, the heat of the AC reactor ACL is not easily conducted to other heat dissipating components (for example, switching elements constituting the inverter circuit, etc.), and heat dissipation of other heat dissipating components can be ensured. Moreover, the heat dissipation of the AC reactor ACL can be ensured by the heat sink F2 of the casing 40.

由於盒體40與框體10之間配置有安裝構件30，盒體40與安裝構件30之間以及安裝構件30與框體之間分別配置有第1襯墊33、第2襯墊34，所以可將盒體40與框體之間予以密閉並提高防水性。 Since the mounting member 30 is disposed between the casing 40 and the casing 10, the first gasket 33 and the second gasket 34 are disposed between the casing 40 and the mounting member 30, and between the mounting member 30 and the casing. The case 40 and the frame can be sealed and the waterproof property can be improved.

再者，本實施形態中，由於在盒體40安裝有交流電抗器ACL，所以交流電抗器ACL之熱因間隙S的隔熱效果而不易傳導至框體10，安裝開關模組IPM之框體100的部分不易受到交流電抗器ACL之發熱的影響而可確保開關模組IPM的散熱。 Further, in the present embodiment, since the AC reactor ACL is attached to the casing 40, the heat of the AC reactor ACL is not easily transmitted to the casing 10 due to the heat insulating effect of the gap S, and the casing of the switch module IPM is mounted. The part of 100 is not easily affected by the heat of the AC reactor ACL and ensures the heat dissipation of the switch module IPM.

又，本實施形態中，雖然設置於盒體40之凸部36與框體10接觸，但是其接觸面積小而實質上並無受到朝框體10傳導之交流電抗器ACL之熱的影響。此外，亦可設置隔熱性的襯墊。 Further, in the present embodiment, the convex portion 36 provided in the casing 40 is in contact with the casing 10, but the contact area is small and is substantially not affected by the heat of the AC reactor ACL which is conducted to the casing 10. In addition, a heat insulating gasket may be provided.

以上說明了本發明之一實施形態，惟以上的說明係用以容易理解本發明之原理，並非用以限定本發明。本發明在不脫離該主旨的情形下，可進行變更、改良， 並且本發明當然包含其等效物。 The embodiments of the present invention have been described above, but are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist of the present invention. And the invention of course includes its equivalents.

例如，雖然係在盒體40與框體10相對向之間設置有空氣的隔熱層來隔熱，但是也可建構成於該空氣的隔熱層配置隔熱構件，也可將安裝構件30作為具有隔熱性的構件。 For example, although a heat insulating layer of air is provided between the casing 40 and the casing 10 to prevent heat insulation, a heat insulating member may be disposed in the heat insulating layer of the air, and the mounting member 30 may be disposed. As a member having heat insulation properties.

(產業上利用性) (industrial use)

本實施形態之電力變換裝置1係可利用作為包含太陽電池2a至2d等之直流電源的電力變換系統等。 The power conversion device 1 of the present embodiment can be used as a power conversion system or the like including a DC power source such as solar cells 2a to 2d.

11‧‧‧上壁 11‧‧‧Upper wall

14‧‧‧右壁 14‧‧‧ right wall

15‧‧‧底部 15‧‧‧ bottom

17‧‧‧孔 17‧‧‧ hole

30‧‧‧安裝構件 30‧‧‧Installation components

33‧‧‧第1襯墊 33‧‧‧1st pad

34‧‧‧第2襯墊 34‧‧‧2nd pad

40‧‧‧盒體 40‧‧‧Box

F1、F2‧‧‧散熱片 F1, F2‧‧‧ heat sink

Claims (5)

一種電力變換裝置，係構成為使用複數個開關元件而將直流電力變換成交流電力後供給至輸出線，並且使至少具有電抗器及電容器之濾波器電路介設於該輸出線，而使前述交流電力所包含的高頻成分衰減，且該電力變換裝置具備有：盒體，係從框體的內側朝向外側並透過開口突出，且收容前述電抗器；以及覆蓋構件，係具有可供連接到前述複數個開關元件之前述輸出線拉出的孔，而且設於前述框體與前述盒體之間且覆蓋前述開口；將前述複數個開關元件以與前述盒體錯開位置之方式配置於前述框體之內側，並且至少將前述盒體與前述框體相對向之間予以隔熱。 A power conversion device is configured to convert DC power into AC power using a plurality of switching elements, supply the power to an output line, and apply a filter circuit having at least a reactor and a capacitor to the output line to cause the AC The power conversion device includes a casing that protrudes from the inner side of the casing toward the outer side and protrudes through the opening, and houses the reactor; and the covering member has a connection to the foregoing a hole drawn by the output line of the plurality of switching elements, and disposed between the frame body and the casing and covering the opening; and the plurality of switching elements are disposed in the frame in a position shifted from the casing The inside is at least insulated between the casing and the frame. 如申請專利範圍第1項所述之電力變換裝置，於前述覆蓋構件與前述框體之間設置有空氣的隔熱層。 The power conversion device according to claim 1, wherein a heat insulating layer of air is provided between the covering member and the frame. 如申請專利範圍第1項所述之電力變換裝置，其中，前述覆蓋構件係具有隔熱性。 The power conversion device according to claim 1, wherein the covering member has heat insulating properties. 如申請專利範圍第2項所述之電力變換裝置，其中，該電力變換裝置更具備有：第1襯墊，係將前述空氣的隔熱層構成在間隔件的周圍，且該第1襯墊係配置在前述覆蓋構件與前述盒體之間；以及第2襯墊，係配置在前述間隔件與前述框體之間。 The power conversion device according to claim 2, wherein the power conversion device further includes: a first spacer, wherein the heat insulating layer of the air is formed around the spacer, and the first spacer The arrangement is between the covering member and the casing; and the second spacer is disposed between the spacer and the casing. 如申請專利範圍第1至4項中任一項所述之電力變換裝置，其中，前述電抗器係以具熱傳導性的方式安裝於前述盒體，且於前述盒體形成有散熱片。 The power conversion device according to any one of claims 1 to 4, wherein the reactor is thermally coupled to the casing, and a heat sink is formed in the casing.