201233038 "六、發明說明： - 【發明所屬之技術領域】 ••本發明係有關於被利用於馬達的控制之反相器裝置 ' (inverter device,有稱為反向器、反流器等情形）。此外， 本發明係有關於包含搭載有該反相器裝置的電動車之移動 體之相關技術。 【先前技術】 習知技術中’自動車或自動二輪車之移動體一般係將 石油或輕油作為燃料而取得驅動力的引擎作為驅動源。 但，近來’在環境保護的對策上，則矚目於將電力作為能 量而取得驅動力的馬達作為驅動源之電動車的開發。 於馬達的控制其多數係利用反相器電路。反相器電$ 係具備將電源部所供應的直流電力變換成馬達的驅動上~ 必需之交流電力的功能。反相器電路係具備轉換元件，其 係由FET(Field Effect Transistor :電場功效電晶體） 等所構成，控制該轉換元件，並重覆進行電流的導通、遮 斷之動作，藉此而將直流電力變換成交流電力。 另一方面，反相器裝置為了使反相器電路達成最佳的 功能，則具備用以使直流電力的變動部分平滑化之電容 器。例如，可於專利文獻1查閱具有設置轉換元件和電容 器的反相器電路基板的反相器裝置之一例。專利文獻1所 記载之基板構裝反相器裝置係於1張的電路基板表面構裝 具有轉換元件的半導體晶片、以及濾波器（filter)電容 器’並於電路基板内側設置散熱部之液冷散熱片。 4 323641 201233038 (先前技術文獻） • (專利文獻） : 專利文獻1 :特開2001-286156號公報 ' 【發明内容】 (發明所欲解決的課題） 有關於用以使反相器電路之直流電力的變動部分平滑 化之電容器，例如將電動車作為移動手段而利用且欲使用 市售零件而能滿足充分的壽命時，該電容器的高度係如專 利文獻1所記載之反相器裝置所示地遠高於轉換元件的高 度。當設置用以收納如上所述之反相器裝置的轉換元件或 電容器而予以保護之箱子時，則必須充分考量轉換元件或 電容器的形狀或尺寸而設計箱子。若不如此處理時，則有 反相器裝置形成必要以上之大型化之虞。 此外，一般而言，反相器裝置係必須設置用以將轉換 元件所發出的熱予以散熱之例如散熱葉（f iη)或散熱片 (heat sink)。設計反相器裝置的箱子時，亦必須考量散熱 片等之情形。由於專利文獻1所記載之反相器裝置係於1 張的電路基板表面構裝具有轉換元件的半導體晶片、以及 濾波器電容器，並於電路基板内侧設置散熱部之液冷散熱 片，故有形成比較大型的裝置之虞。 本發明係有鑑於上述之點而發明，其目的提供一反相 器裝置，其係具備可收納相對於轉換元件尺寸較大的電容 器，且能有效整然地設置散熱片之箱子，以達成精簡化、 以及散熱性能的提升。此外，另一目的為提供一移動體， 5 323641 201233038 有搭载有如上所述的反相料置 (解決課題之手段） ％ ^ =解決上狀課題，本發明係在於箱子的内部收納 署合Cb 2換兀件和電容器之反相11電路基板的反相器裝 s MiiiU目子係具備··㈣前述反相器電路基板之收 、’部’且前述收納部係區分為第！收納部和第2收納部之 2個的空間’前述第“文納部係前述箱子外表面的一面至 1向於4外表面之别述箱子的内表面為止的距離相較於前 述第2收、’’〜卩為更⑯，且具備朝向外側延伸而形成之散熱 片，亦配置有前述轉換元件，前述第2收納部係前述箱子 外表面的-面至對向於該外表面之前述箱子的内表面為止 的距離相較於前述第1收納部為更長，且配置有前述電容 器。 根據該構成，反相器裝置若將前述箱子外面的一面作 為下方時，第1收納部的高度則低於第2收納部的高度。 據此，箱子的外侧亦產生第丨收納部的高度低於第2收納 部的高度之段差。此外，利用該高度為低的狀態，形成用 以將配置於第1收納部的轉換元件的熱度予以散熱之散熱 片。因此，能在將前述箱子外面的一面作為下方時的第1 收納部和散熱片的高度、以及第2收納部的高度作成大致 相等’且能將對應於此等收納部的頂部之箱子的外表面作 成平面。 此外，在上述構成之反相器裝置當中，前述箱子係具 備： 323641 6 201233038 * 開口部，其係設置於前述外表面的一面；以及 刖埏收納部，其係自前述開口部朝向内側而窪陷成凹 :狀， 前述反相器電路基板係接近於前述開口部而配置。 根據該構成，反相器裝置係於將存在箱子之開口部的 一面作為下方時，第1收納部的高度則低於第2收納部的 咼度。此外，在反相器電路基板的上方，配置轉換元件於 第1收納部，而配置電容器於第2收納部。 此外，在上述構成之反相器裝置當中，將充填劑充填 於前述收納部的空間’前述電容器的一部份則自前述充填 劑露出。 一般而言，將充填劑充填於電路基板的周圍時，考量 電容器萬一故障之情形，而有將電容器的一部份自充填劑 予以露出的必要’但，根據該構成即可達成。因此’反相 器裝置即能更深一層地提高散熱性能，此外，亦可提升反 相器電路基板的構裝零件之固定或防溼、防塵之性能。 此外’在上述構成之反相器裝置當中，前述第2收納 部係於對向於前述開口部之前述箱子的壁部之處，具備連 通前述箱子的内部和外部之間的穴部。 根據該構成，即可將充填劑自穴部而流入箱子的内 部。此外，由於將存在有箱子之開口部的一面作為下方時， 第1收納部則低於第2收納部，故將充填劑流入至轉換元 件完全被覆蓋為止，即能使電容器的一部分自充填劑予以 露出。 323641 7 201233038 此外’在上述構成之反相器装置當中，前述穴部的前 述箱子内側的一端係較前述電容器的一部分更位於前述收 納部的内側。 根據該構成’將充填劑自穴部流入箱子的内部時，欲 使其自充填劑露出之電容器的一部分即可不接觸充填劑。 此•外’在上述構成之反相器裝置當中，前述散熱片係 於’沿著前述第1收納部和前述第2收納部而排列的方向延 伸有複數個’且設置於鄰接的前述散熱片之間之窪陷成凹 狀之通風路的深處，於對應於前述第1收納部和前述第2 收納部的境界之處具有曲面或斜面。 根據該構成’空氣則例如自第1收納部和第2收納部 相對向之側流入鄰接於散熱片的通風路。流入通風路的該 工疯*係於對應於第1收納部和第2收納部的境界之處，沿 著曲面而流動並放出於箱子的外侧。據此，即能使流入通 風路的空氣順暢地流通。201233038 "VI. Description of the invention: - [Technical field to which the invention pertains] • The present invention relates to an inverter device that is used for control of a motor (inverter device, which is called an inverter, a reflux, etc.) situation). Further, the present invention relates to a related art including a mobile body of an electric vehicle equipped with the inverter device. [Prior Art] In the prior art, a moving body of an automatic car or a motorcycle is generally an engine that uses petroleum or light oil as a fuel to obtain a driving force as a driving source. However, in the recent measures for environmental protection, development of electric vehicles using a motor that uses electric power as energy as a driving source has been developed. Most of the control of the motor utilizes an inverter circuit. The inverter power system has a function of converting the DC power supplied from the power supply unit into the necessary AC power for driving the motor. The inverter circuit includes a conversion element, which is constituted by an FET (Field Effect Transistor) or the like, and controls the conversion element to repeat the operation of turning on and off the current to thereby convert the DC power. Transform into AC power. On the other hand, in order to achieve an optimum function of the inverter circuit, the inverter device is provided with a capacitor for smoothing a fluctuation portion of the DC power. For example, an example of an inverter device having an inverter circuit substrate on which a conversion element and a capacitor are provided can be referred to in Patent Document 1. In the substrate-mounted inverter device described in Patent Document 1, a semiconductor wafer having a conversion element and a filter capacitor are mounted on one surface of a circuit board, and a heat-dissipating portion is provided inside the circuit substrate. heat sink. 4 323 641 201233038 (Prior Art Document) • (Patent Document): Patent Document 1: JP-A-2001-286156 A SUMMARY OF INVENTION [Problems to be Solved by the Invention] Regarding DC power for making an inverter circuit For example, when the capacitor is used as a moving means and the commercially available parts are used to satisfy a sufficient life, the height of the capacitor is as shown in the inverter device described in Patent Document 1. Far above the height of the conversion element. When a case for protecting the conversion element or capacitor of the inverter device as described above is provided, the case must be designed in consideration of the shape or size of the conversion element or capacitor. If this is not the case, there is an increase in the size of the inverter device. Further, in general, the inverter device must be provided with, for example, a heat sink (f iη) or a heat sink for dissipating heat generated by the conversion element. When designing the case of the inverter device, it is also necessary to consider the case of the heat sink or the like. In the inverter device described in Patent Document 1, a semiconductor wafer having a conversion element and a filter capacitor are mounted on one surface of a circuit board, and a liquid-cooled heat sink having a heat dissipation portion is provided inside the circuit substrate. The comparison between large devices. The present invention has been made in view of the above points, and an object thereof is to provide an inverter device which is provided with a capacitor which can accommodate a capacitor having a large size with respect to a conversion element, and which can efficiently and uniformly provide a heat sink, to achieve a simplified And the improvement of heat dissipation performance. In addition, another object is to provide a moving body, and 5 323 641 201233038 is equipped with the reversed-phase material as described above (means for solving the problem) % ^ = solving the problem, the present invention is based on the internal storage of the box (2) Inverter mounting of the circuit board and the capacitor 11 The inverter of the circuit board is provided with the "part" of the inverter circuit board and the storage unit is divided into the first! Two spaces of the accommodating portion and the second accommodating portion are the distances from the one surface of the outer surface of the box to the inner surface of the outer surface of the outer surface of the outer surface of the fourth outer surface of the box. Further, the ''~卩 is 16 and has a heat sink formed to extend outward, and the conversion element is disposed, and the second storage unit is a surface facing the outer surface of the box to the outer surface facing the outer surface The distance from the inner surface is longer than that of the first storage portion, and the capacitor is disposed. According to this configuration, when the inverter device has one surface on the outer surface of the case as the lower side, the height of the first storage portion is The height of the second storage portion is lower than the height of the second storage portion, and the height of the second storage portion is lower than the height of the second storage portion. The fins of the first accommodating portion are heat-dissipated by the heat of the heat transfer element. Therefore, the height of the first accommodating portion and the heat sink and the height of the second accommodating portion when the outer surface of the case is lower is made substantially The outer surface of the case corresponding to the top of the accommodating portion is formed as a flat surface. Further, in the inverter device having the above configuration, the case includes: 323641 6 201233038 * an opening portion provided in the foregoing And one side of the outer surface; and the sputum accommodating portion is recessed inwardly from the opening portion, and the inverter circuit substrate is disposed close to the opening portion. According to this configuration, the inverter device When the one surface of the opening of the case is located below, the height of the first housing portion is lower than the height of the second housing portion. Further, the conversion element is placed above the inverter circuit board in the first housing portion. Further, in the inverter device having the above configuration, a portion of the capacitor in which the filling agent is filled in the housing portion is exposed from the filling agent. When the filler is filled around the circuit board, it is necessary to consider the failure of the capacitor in case of a failure, and it is necessary to expose a part of the capacitor from the filler. According to this configuration, the inverter device can improve the heat dissipation performance deeper, and can also improve the fixing or moisture-proof and dust-proof performance of the components of the inverter circuit board. In the inverter device configured as described above, the second housing portion is provided with a hole portion that communicates between the inside and the outside of the case where the wall portion of the case facing the opening portion is provided. The filling agent flows into the inside of the case from the hole portion. When the surface on which the opening of the case is present is made lower, the first storage portion is lower than the second storage portion, so that the filling agent flows into the conversion member completely. In the inverter device configured as described above, the one end of the inside of the case of the hole portion is located further in the accommodating portion than a part of the capacitor. The inside. According to this configuration, when the filler is poured into the inside of the case from the pocket portion, a part of the capacitor to be exposed from the filler can be prevented from contacting the filler. In the inverter device configured as described above, the heat sink is formed in a plurality of 'extending directions along the first storage portion and the second storage portion, and is disposed adjacent to the heat sink. The depth of the ventilated road that is recessed between the two has a curved surface or a sloped surface corresponding to the boundary between the first storage portion and the second storage portion. According to this configuration, the air flows into the air passage adjacent to the heat sink from the side opposite to the first storage portion and the second storage portion, for example. The worker who enters the air passage is in a state corresponding to the boundary between the first storage portion and the second storage portion, flows along the curved surface, and is placed outside the case. According to this, the air flowing into the ventilating passage can be smoothly circulated.
此外，本發明係將上述之反相器裝置作 電動車等之移動體。 。载於W 根據該構成，在電動車等之移動體當中，即可將配置 反相器裝置的箱子之轉換元件的第1收納部和散熱片的高 度、以及配置電容器的第2收納部的高度作成大致相等同 且能將此等頂部作成平面。 又，此處所敘述之「移動體」雖係指包含自動二輪車 或自動三輪車、自動四輪車等之電動車，但，亦包含:達 船等船舶或水上遊具等之以馬達作為驅動源之電動式乘坐 323641 8 201233038 工具，此外，亦包含無人搭乘且可在無人狀態下移動之電 動式移動體。 (發明功效） 根據本發明之構成，即能提供反相器裝置，其係具備： 可收納相對於轉換元件其尺寸較大的電容1，且能有效整 ^地°又置政熱片之箱子，以達成精簡化、以及散熱性能的 *升此外，亦能提供例如包含電動車等之移動體，其係 搭载有如上所述的反相器裝置。 【實施方式】 =象第1圖至弟8圖而說明本發明之實施形態。 最初’對於搭载有本發明之實施形態之反相器裝置之 、&動體的例之電動車，使用第1圖和第2圖而說明其構 =第1圖係表示搭載有反相器裝置之電動車的側面圖， 圖係表示電動車的構成之區塊圖。 雷包電動車1係如第1圖所示，為具備前輪2和後輪3之 式自動一輪車。電動車i係以主架㈤nframe)4、以 b動手I5作為主要骨架而構成。 ⑽主架4係μ端部為朝向上方而彎曲，且在該前端部以 用^之以而支持前輪2、以及把手6。把手6係設置使 ^電動車1的加減速時之節流器（浙〇Ule)7、以及使用 於制動時之制動器（braking^8。 1供ϊ架4的後端側’電動車1的前後方向之略中央部係 二！驶;員乘坐的座A 9、U及電池收容部10。電池收容 〇係°又置於座位9的下方’且可收容電池11於内部。 323641 9 201233038 座位9亦達成電池收容部10的蓋子的功能，並安裝成可對 ' 電池收容部10進行開閉之狀態。主架4的座位9之後方， ' 後輪3的上方之處係具備置物台12。 擺動手臂5係自主架4的後部之座位9、以及電池收 容部10的處所下方朝向後方而延伸。後輪3係支持於擺動 手臂5的後端。此外，後輪3係驅動輪’在和擺動手臂5 之間具備用以驅動後輪3的馬達20。亦即，擺動手臂5係 將馬達20、以及後輪3的旋轉軸支持成水平狀態。此外， 後輪3的懸掛單元13係自擺動手臂5的馬達20之處的上 部朝向上方的置物台12而延伸。 此外，電動車1係具備用以進行馬達2〇的動作控制之 反相器裝置30。反相器裝置3〇係露出其外面以接觸外氣。 在第1圖所示之實施形態中，反相器裝置3〇係設置流通空 氣的空間於和後輪3之間而安裝於座位9、以及電池收容 部10的後方之主架4 ^當移動電動車丨時，反相器裝置3〇 和後輪3之間，其空氣係流通於第j圖之實線箭頭A所示 的方向而使風吹向反相器裝置3〇。 反相器裝置30係如第2圖所示，具備控制部3卜以 及反相器電路部50。又，控制部31係由-般的微電腦等 所構成’具備根據記憶、輸入於該微電腦内部等之程式、 貝料而控制馬達20的-連串動作之處理器（pr〇cess〇^ 功能。 當移動電動車1時’控制部31則對馬達20設定因應 於自駕駛員所操作的節流器7所取得之節流器7的開啟^ 323641 10 201233038 度的目標轉矩。之後’控制部31係控制反相器電路部5〇 .而調整應傳送於馬達Μ的電流或電壓等並驅動馬達2〇。 -- $1圖之外’繼而使用第3圖至第8圖而說明有關於 •馬達20、以及反相器裝置3〇之詳細構成。第3圖係表示 反相器裝置3G週邊之概略構成圖。第4圖係表示反相器褒 置30的内部構造之立體圖。第5圖係表示反相器裝置3〇 的垂直截面側面圖。第6圖係表示自箱子的開口部側而觀 測反相器裝置30之立體圖。第7圖係表示自箱子的散執片 侧而觀測反相器裝置3G之立體圖。第8圖係作成和第5圖 相同的反相器裝£ 30 #垂直截面侧面圖，且為說明將充填 劑予以流入於箱子内部的狀態之說明圖。又，在以下的說 明當中，除了特別限定的需要之情形外，亦有省略表示馬 達20的各相之「U」「V」「W」的辨別記號、或表示電力的 高低之「H」「L」的辨別記號之情形。此外，對複數存在之 轉換元件總括敘述時，亦有省略其元件符號之情形。 馬達20係3相式的無刷馬達，具備：為旋轉構件之轉 子（未圖示）、以及為固定構件之定子21(參閱第3圖）。於 轉子係設置有永久磁石，於定子21係設置有υ相、v相、 以及W相的線圈22U、22V、以及22W。 此處，電池11係直流電源，將正輸出端子lla作成高 電壓側，將負輸出端手lib作成低電壓側，並將直流電壓 輸出於正輸出端子lla和負輸出端子Hb之間。 反相器裝置30係具備第3圖至第5圖所示之反相器電 路部50、以及平滑電路部60。又，反相器裝置3〇係如第 323641 11 201233038 4圖和第5圖所示，具有：反相器電路基板犯，設置有分 • 別使反相器電路部50和平滑電路部60偏在而構成；以及 ' 控制基板33，設置有前述的控制部31，且相對於反相器電 路基板32表面直立而設置。 反相器電路部50係如第3圖所示，具備ϋ相用轉換電 路51、V相用轉換電路52、以及w相用轉換電路53。各轉 換電路係具備串聯連接之一對轉換元件，並經由平滑電路 部60而串聯連接於正輸出端子Ua和負輸出端子ub之 間。 U相用轉換電路51係由上臂側（高電壓侧）轉換元件 51H、以及下臂側（低電壓側）轉換元件5比所構成。v相用 轉換電路52係由上臂側（高電壓侧）轉換元件52H、以及下 臂側（低電壓側）轉換元件52L所構成。W相用轉換電路53 係由上臂側（高電壓侧）轉換元件53H、以及下臂側（低電壓 側）轉換元件53L所構成。又，在第3圖當中，各轉換元件 雖係描述為FET(電場功效電晶體），但，亦可將此等轉換 成IGBT(絕緣閘極雙極性電晶體）等。 此處，各轉換元件係以第4圖之下侧或上侧之形態， 在反相器電路基板32上方當中，區分為上臂側（高電壓側） 轉換元件51H、52H、53H以及下臂侧（低電壓側）轉換元件 51L、52L、53L 而配置。 U相之串聯連接的上臂側轉換元件51H和下臂侧轉換 元件51L之間的連接點係經由電流感測器54U而連接於馬 達20的線圈22U(參閱第3圖）。電流感測器54U係鄰接於 12 323641 201233038 端子部56U而設置於連接u相的上臂側轉換元件51ίϊ和卞 臂側轉換元件51L的電路、以及連接朝向線圈22U而延伸 • 的電線之端子部56U之間的處所（參閱第4圖）。電流感測 器54U係檢測被利用於馬達2〇的驅動控制的U相之流動電 流’並將該信號傳送於控制部31。 V相之串聯連接的上臂侧轉換元件52Η和下臂側轉換 元件52L之間的連接點係連接於馬達20的線圈22V(參閲 第3圖）。在第4圖所示之反相器電路基板32當中，連接 V相的上臂側轉換元件52Η和下臂側轉換元件52L的電路 係連接於朝向線圈22V而延伸的電線所連接之端子部56V。 W相之串聯連接的上臂侧轉換元件53H和下臂側轉換 元件53L之間的連接點係經由電流感測器54W而連接於馬 達2〇的線圈22W(參閱第3圖）。電流感測器54W係鄰接於 端子部56W而設置於連接w相的上臂侧轉換元件53H和下 臂侧轉換元件53L的電路、以及連接朝向線圈22W而延伸 的電線之端子部56W之間的處所（參閱第4圖）。電流感測 器54W係檢測被利用於馬達2〇的驅動控制的w相之流動電 流’並將該信號傳送於控制部31。 又，V相的流動電流係可根據使用電流感測器54u、54W 而檢測的U相、W相之流動電流而推定。 此外，藉由控制部31而控制各轉換元件的轉換動作， 反相器電路部50係重覆進行各轉換元件的電流的導通、遮 斷，藉此而將直流電力變換成交流電力。藉由供應該交流 電力於馬達2〇，即可使電流流通於馬達2〇之卩相、v相、 323641 13 201233038 以及W相的各線圈22U、22V、以及22W*驅動。 . 反相11電路部5G係將直流電力變換成交流電力，控制 部31係於隨著時間之經過的同時而改變u相、¥相、以及 w相的電壓準位之高㈣係。又，於馬達2Q或反相器裝置 30係設置有檢測馬達2G之轉子的旋轉方向的位置之手 段’控制部31係根據該位置、以及期望的馬達2〇之轉矩 而選擇導通電流之轉換元件。 另一方面，平滑電路部6〇係鄰接於反相器電路部5〇 而設置於反相H電路基板32上方。平滑電路部⑽係如第 5圖和第6圖所示，具備複數的使直流電力的變動部分平 滑化之電容H 6卜電容器61係於其頂部設置抽氣活門 61a。抽氣活門61a係藉由薄切電容器61的外裝而構成。 5活H 61a絲當電容器61萬—故障時，用以放出在電 谷器61内部產生的氣體而防止破裂，市售的電容器一般均 有設置。此外，如第4圖所示’平滑電路部6〇亦和反相器 電路部50同樣地，言史置連接朝向電而延伸的電^ 端子部62H、62L。 此外，反相器震£30如第i圖所示，設置流通空 空間於和後輪3之間而絲於座位9、以及電池收容部 的後方。反相器裝置30其外觀並無第5圖至第7圖所示之 幵人態’ *具備以熱傳導性較高_合金所構成之箱子仙。 箱子40係相對於形成略直方體形狀的外形，具備 於其外面的-面之開口部41。此外，箱子4〇係具備自 口部41朝向箱子40的内側而窪陷成凹狀之收納部“。枚 323641 14 201233038 納部42係收納設置各轉換元件和電容器61的反相器電路 基板32或控制基板33，並覆蓋此等基板的電子零件之構 裝處。反相器電路基板32係配置於接近於收納部42的開 口部41之處。 又，箱子40的開口部41之處係藉由第5圖和第6圖 所示之蓋34而閉鎖。蓋34係鎖固於箱子4〇動作。蓋34 係嵌合於設置關π部41之__側之段差，而不致於 自對應於開口部41的相子4〇的外面向外側突出。 此外，箱子40係具備用以將電線等連接於自正面可觀 測的右側面之箱子端子部43。箱子端子部43係經由連接 構件35而和反相器電路部50的3個之端子部5阳、56v、 56W、以及平滑電路部60的2個之端子部62h、62L相連接。 連接構件35係例如由銅之金屬所構成，並形成延伸於 箱子端子部43和各端子部56之_平板形狀。此外，連 接構件35係在箱子端子部43和各端子部π、62當中，藉 由螺絲35a而予以固定。如此處理，即可盡量擴展連接構 件35的戴面積，且可將連接構件35的厚度作成較薄。因 此，能盡量不占有反相器電路基板32的空間，且能流通較 大的電流於連接構件35。 又’如第6圖所示’連接箱子端子部43和u相的端子 部56U之連接構件35U係形成為於中途彎曲。亦即，連接 構件35U係於箱子端子部43側而其中途延伸於傾斜的方向 以使能接近於V相的連接構件35V〇據此，在箱子端子部 43當中，即可等間隔地配置3相的連接構件祁之各端部。 323641 15 201233038 此外，在對應於和設置箱子40之箱子蟪子部43的側 面相反侧的侧面之處中，反相器電路基板32係具備局部性 切割基板而構成之信號線抽出口 32a。一端為連接於控制 基板33的信號線36係通過信號線抽出口 32a，而於對於 反相器電路基板32的開口部41側脫離，並沿著反相器電 路基板32的一面而延伸於箱子端子部43的方向。據此， 將信號線36進行配線時，即可防止在反相器電路基板32 的電子零件構裝側被電子零件妨礙，且亦可防止於對反相 器電路基板32的開口部41侧占有廣大空間。因此，可達 成反相器裝置30的精簡化，且能順暢地將信號線36進行 配線。 另一方面，收納部42係如第5圖和第6圖所示’區分 為第1收納部42a、以及第2收納部42b之2個空間。 第1收納部42a係配置有轉換元件之第5圖的收納部 42的左側部分’且存在於設置於電動車1之反相器裝置30 的下侧。第1收納部42a係自設置開口部41之箱子40之 外面的一面至對向於其外面的箱子4〇之内面’亦即至第5 圖之下侧的内面為止的距離D1為較第2收納部42b的相同 距離D2更短。 由於第1收納部42a係提高轉換元件的散熱功效’故 各轉換元件係密接於箱子4〇之第5圖的下側的内面而安 裝。又，其絕緣對策亦有將高熱傳導性的矽樹脂製薄膜材 料或潤滑油脂介於箱子4〇和轉換元件之間之情形。 此外，第1收納部42a係於其箱子40的外面具備複數 323641 16 201233038 的散熱片44。散熱片44係如第5圖和第7圖所示，以分 別遠離反相器電路基板32之方式，朝向外側（第5圖之下 側）延伸，且形成於沿著第1收納部42a和第2收納部42b 並排的方向而延伸之板狀構件。此外，複數的散熱片44係 使鄰接的散熱片44以空出間隔而相對向的方式略為平行 地排列設置。 如前述，反相器裝置30係設置有空氣流通的空間於和 後輪3之間而安裝於座位9、以及電池收容部10的後方， (參閱第1圖）。此外，反相器裝置30係如第1圖和第5圖 所示，安裝為第1收納部42a存在於下側，且散熱片44為 存在於後輪3侧。亦即，反相器裝置30係以直接迎風的方 式，將散熱片44朝向空氣流通方向上流露出而設置。當移 動電動車1時，反相器裝置30和後輪3之間其空氣係流通 於第1圖之實線箭頭A所示的方向，於散熱片44之處其空 氣係流通於第5圖之實線箭頭A所示的方向。 鄰接的散熱片44之間係如第5圖和第7圖所示，設置 窪陷成凹狀的通風路45。通風路45係於對應於第1收納 部42a和第2收納部42b的境界之處具有曲面45a。據此， 當移動電動車1時，空氣即可流入和第1收納部42a和第 2收納部42b相對向之側，亦即自反相器裝置3〇的下侧而 流入鄰接於散熱片44之通風路45。流入於通風路45的該 空氣係於對應於第1收納部42a和第2收納部42b的境界 之處所沿著曲面45a而放出於箱子的外側’亦即電動車1 的後方（參閱第1圖）。如此處理，即能使流入的空氣順暢 17 323641 201233038 地流通於通風路45。又，曲面45a亦可為斜面。 .· 第2收納部42b係配置有電容器61之第5圖的收納部 - 42的右侧部分，且存在於設置於電動車1之反相器裝置3〇 的上側。第2收納部42b係自設置開口部41之箱子40之 外面的一面至對向於其外面的箱子40之内面，亦即至第5 圖之下側的内面為止的距離D2為較第i收納部42a的相同 距離D1更長。 , 平滑電路部60之電容器61係例如使用2kW的馬達之 電動車1且要求大約1萬小時的壽命時，則必須形成數― 的電谷量。當例如以能構裝於反相器電路基板32之數個程 度的市售之電容器而滿足如此之電容量時，則該電容器的 尚度即开>成5至6cra的咼度（參閱第4圖和第5圖）。因此， 第2收納部42b係形成為相對於在覆蓋轉換元件之反相器 ，路部50的零件上已具有所必需之充分的容積之第丨收納 邛42a，其自開口部41朝向對向於開口部41之侧，亦即 朝向第5圖的下侧更為增加容積之形狀。 第2收納部42b係如第5圖所示，隔吩電容器6卜而設 置控制基板33於遠離反相器電路部5〇之處。控制基板⑽ 係對反相器電路基板32的電容器61等之構裝面成垂直狀 直立而設置。如此處理，由於未沿著反相器電路基板％的 表面而配置控制基板33，故更能提高反相器裝置的精 簡化。 此外，第2收納部42b係於對向於開口部41之箱子 40壁邛，亦即第5圖之下側之處，具備連通箱子的内 323641 18 201233038 部和外部之間的圓筒形狀的穴部46。穴部46其箱子40内 側的一端係較電容器61的一部分更位於收納部42的内 侧°因此，為了避免穴部46和電容器61的衝突，穴部46 係對應於第2收納部42b的未設置有電容器61之空間而配 置。穴部46係設置用以開放、閉鎖該穴部46之圓筒形狀 的检47。栓47係可自箱子40的外側裝卸於穴部46。藉由 將設置於穴部46的内周之螺絲帽部和設置於栓47的外周 之公螺絲部予以扣合，而能進行穴部46之開放、閉鎖。栓 47係如第7圖所示，藉由將六角扳手等插入設置於其外側 的六角穴47a而得以旋轉。 又’由於設置止動部（stopper)於穴部46之箱子40内 侧的一端之處，故栓47於自箱子40的外側扭進穴部46 時’不致於有掉落入箱子40内部的情形，而可收容於穴部 46内而不會自箱子4〇的外面朝外側突出。 此外，如第5圖所示，箱子40内部的收納部42之空 間係充填有充填劑 37。又，充填劑37雖係自閉鎖開口部 之蓋34之處朝向收納部42内側而充填，但，電容器61 的—部分’亦即設置抽氣活門61a之頂部則自充填劑37而 气充填劑係例如由高熱傳導性之氨基曱酸乙酯或環氧 $月曰所構成’且為了提升反相器電路基板32或控制基板 之構裳零件的固定或防溼、防塵、散熱之性能而設置。 部。充填劑37係以第8圖所示之狀態而流入箱子40内 箱亦即，以蓋34位於下侧之方式保持反相器裝置30的 相子4〇，充填劑37則自拆卸拴47而形成開放的穴部46 323641 19 201233038 係使用未卩。充填劑37的住箱子4G内部之流入動作 之調合器，該調合器針1〇 下方於下方’料靠近電容器61的一部分之頂部而位於其 100 ^ ^填劑37係充填於收納部42至靠近調合器針 器電則的第8圖之虛線所示的高度為止。反相 ▲ 2或控制基板33、轉換元件係埋沒於充填劑 内，如前述’電容器61的一部分，亦即設置抽氣活門 斤a之頂。ρ則自充填劑37而露出。如此處理，由於將存在 相子40的外面的開口部41之—面作為下方時，㈣μ 納。I5 42a低於第2收納部42b.，故可將充填劑37流入直至 轉換元件完全被覆蓋為止，且可將電容器61的—部分自充 填劑37而露出。此外，自穴部.仙將充填劑37流入箱子 40的^部時，即可不使充填劑37接觸欲自充填劑37露出 之電容器61的-部分’亦即設置抽氣活門6U之頂部。 如上述，反相器裝置30係於將存在箱子40外面的開 口部41之一面作為下方時’則第1收納部42a的高度低於 第2收納部42b的高度。據此，即使在箱子4〇的外側，亦 可產生第1收納部42a的高度低於第2收納部42b的高度 之段差D3(參閱第5圖）^此外，利用該高度為低之狀態， 即可形成用以將配置於第1收納部42a的轉換元件之熱度 予以散熱之散熱片44。第5圖所示之實施形態時，箱子4〇 係具備相當於段差D3的高度之散熱片44。因此，將存在 323641 20 201233038 箱子40外面的開口部41之一面作為下方時，即可將其第 1收納部42a及散熱片44的高度、和第2收納部42b的高 度作成大致相等，且能將箱子40外面之此等收納部的頂部 作成平面。其結果，即可分別解除反相器電路部50之溫度 上升、或平滑電路部60之容積不足的問題，且箱子40的 外形可大致收束為直方體形狀（參閱第5圖和第7圖）。因 此，能有效地提升反相器裝置30的精簡化、以及散熱性能 的提高。 如此處理，根據上述實施形態，即能提供一反相器裝 置30，其係對轉換元件具備可收納尺寸大的電容器61，亦 能有效整然地設置散熱散片44之箱子40’以達成精簡化、 以及散熱性能的提升。此外’可提供一例如電動車1，其 係搭載有如上所述的反相器裝置30。 以上，雖根據本發明之實施形態而說明，但，本發明 並不自限於此’在不脫離發明的主旨之範圍内，亦可增加 各種的變更而實施。 例如，本發明之實施形態中，搭載有反相器裳置3〇之 移動體，雖係以第1圖所示之電動車1之自動二輪車為例 而予以說明’但，自動三輪車或自動四輪車等亦可。此外， 作為反相器裝置30的搭載對象之移動體，並不限定於電動 車，亦可為如馬達船或另外的船舶、水上遊具等之以馬達 作為驅動源之電動式乘坐工具’或無人搭乘且可在無人的 情形下移動之電動式的移動體。在此等移動體當中，本發 明之反相器裝置較佳係設置為全體或至少散熱片的部分能 323641 21 201233038 接觸外氣之方式而予以露出。 .· 此外，上述之實施形態，料存在箱子4G外面的開口 •部4i之-面作為下方時之第i收納部仏及散熱片44的 南度、和第2收納部42b的高度作成大致相等，且能將箱 子40外面之此等收納部的頂料成平面，但，並不限定於 形成如此的平面之情形。亦即，將存在箱子4Q外面的開口 部41之-面作為下方時之散熱片44的高度若為能有效將 轉換7G件的熱度予以散熱的高度時，則並不限定於本實施 形態所示的高度’散熱片44的頂部可高於第2收納部42b 的頂部，亦可低於第2收納部42b的頂部。 (產業上之可利用性） 本發明能被利用於馬達的控制之反相器裝置當中。 【圖式簡單說明】 第1圖表示搭載本發明之實施形態的反相器裝置之移 動體的一例之電動車的侧面圖。 第2圖表示第1圖的電動車的構成之區塊圖。 第3圖表示第2圖的反相器裝置週邊之概略構成圖。 第4圖表示第3圖的反相器裝置的内部構造之立體圖。 第5圖表示第3圖的反相器裝置的垂直截面側面圖。 第6圖表示自箱子的開口部侧而觀測第3圖的反相器 裝置之立體圖。 第7圖表示自箱子的散熱散片而觀測第3圖的反相器 裝置之立體圖。 第8圖作成和第5圖相同的反相器裝置的垂直截面侧 22 323641 201233038 面圖，並說明將充填劑予以流入於箱子内部的狀態之說明 ， 圖s 【主要元件符號說明】 1 電動車（移動體） 2 前輪 3 後輪 4 主架 5 擺動手臂 10 電流收容部 11 電池 11a 正輸出端子 lib 負輸出端子 12 置物台 13 懸掛單元 20 馬達 22U > 22V ' 22W 線圈 30 反相器裝置 31 控制部 32 反相器電路基板 33 控制基板 34 蓋 35、 35H、35L、35U、35V、35W 連接構件 35a 螺絲 36 信號線 23 323641 201233038 37 40 41 42 42a 42b 44 45 45a 46 47 47a 50 51 52 53Further, in the present invention, the inverter device described above is used as a moving body of an electric vehicle or the like. . According to this configuration, in the moving body such as an electric vehicle, the height of the first housing portion and the heat sink of the conversion element of the case in which the inverter device is placed, and the height of the second housing portion where the capacitor is disposed can be placed. The composition is roughly equivalent and the tops can be made flat. In addition, the "mobile body" as used herein refers to an electric vehicle including a motorcycle, an automatic tricycle, an automatic four-wheeled vehicle, etc., but also includes an electric motor such as a ship or a water upstream device that uses a motor as a driving source. It rides on the 323641 8 201233038 tool, and it also includes an electric mobile body that is unmanned and can be moved in an unmanned state. (Effect of the Invention) According to the configuration of the present invention, it is possible to provide an inverter device comprising: a case in which a capacitor 1 having a large size with respect to a conversion element can be accommodated, and a hot film can be efficiently disposed In order to achieve the simplification and the heat dissipation performance, it is also possible to provide a moving body including an electric vehicle or the like, which is equipped with the inverter device as described above. [Embodiment] An embodiment of the present invention will be described with reference to Figs. 1 to 8 . First, the electric vehicle of the example in which the inverter device of the embodiment of the present invention is mounted is described with reference to Figs. 1 and 2; the first figure shows that the inverter is mounted. A side view of an electric vehicle of the apparatus, and a block diagram showing the structure of the electric vehicle. As shown in Fig. 1, the lightning-propelled electric vehicle 1 is an automatic one-wheeled vehicle having a front wheel 2 and a rear wheel 3. The electric vehicle i is configured by a main frame (five) nframe 4 and a b-handle I5 as a main frame. (10) The main end portion 4 of the main frame 4 is bent upward, and the front wheel 2 and the handle 6 are supported by the front end portion. The handle 6 is provided with a throttle device for accelerating and decelerating the electric vehicle 1 and a brake for braking (braking^8. 1 for the rear end side of the truss 4) The center of the front and rear direction is the second center; the seat A 9 and the battery accommodating part 10 are seated by the occupant. The battery accommodating system is placed under the seat 9 and can accommodate the battery 11 inside. 323641 9 201233038 Seating The function of the cover of the battery housing portion 10 is also achieved, and the battery housing portion 10 can be opened and closed. The seat frame 9 of the main frame 4 is rearward, and the storage table 12 is provided above the rear wheel 3. The swing arm 5 is a rear seat 9 of the main frame 4 and a lower portion of the battery housing portion 10 extending rearward. The rear wheel 3 is supported by the rear end of the swing arm 5. Further, the rear wheel 3 is a drive wheel 'in and A motor 20 for driving the rear wheel 3 is provided between the swing arms 5. That is, the swing arm 5 supports the motor 20 and the rotating shaft of the rear wheel 3 in a horizontal state. Further, the suspension unit 13 of the rear wheel 3 is self-contained. The upper portion of the motor 20 of the swing arm 5 is extended toward the upper stage 12 Further, the electric vehicle 1 includes an inverter device 30 for controlling the operation of the motor 2A. The inverter device 3 exposes the outside to contact the outside air. In the embodiment shown in Fig. 1, The inverter device 3 is provided with a space for circulating air between the rear wheel 3 and the seat frame 9 and the main frame 4 behind the battery housing portion 10. When the electric vehicle is moved, the inverter device 3 is provided. Between the crucible and the rear wheel 3, the air flows in the direction indicated by the solid arrow A in Fig. j, and the wind is blown to the inverter device 3A. The inverter device 30 is provided as shown in Fig. 2 The control unit 3 and the inverter circuit unit 50. The control unit 31 is configured by a general microcomputer or the like, and has a series of programs that control the motor 20 based on a program stored in the microcomputer or the like. The processor of the action (pr〇cess〇^ function. When the electric vehicle 1 is moved] the control unit 31 sets the opening of the throttle unit 7 to the motor 20 in response to the throttle unit 7 operated by the driver. 10 Target torque of 201233038 degrees. Then, the control unit 31 controls the inverter circuit unit 5〇 And adjust the current or voltage to be transmitted to the motor 等 and drive the motor 2 〇. - Outside the $1 diagram, and then use Figures 3 to 8 to illustrate the motor 20 and the inverter device 3〇 Fig. 3 is a schematic view showing the configuration of the periphery of the inverter device 3G. Fig. 4 is a perspective view showing the internal structure of the inverter device 30. Fig. 5 is a view showing the vertical direction of the inverter device 3〇. Fig. 6 is a perspective view showing the inverter device 30 from the opening side of the case. Fig. 7 is a perspective view showing the inverter device 3G from the side of the loose film of the case. The same inverter as in Fig. 5 is attached to the side view of the 30# vertical cross section, and is an explanatory view for explaining a state in which the filler is poured into the inside of the case. In addition, in the following description, in addition to the case where it is particularly limited, the identification mark indicating "U", "V", "W" of each phase of the motor 20, or "H" indicating the level of electric power is omitted. The case of the distinguishing mark of L". Further, in the case of a general description of a plurality of conversion elements, the element symbols are omitted. The motor 20 is a three-phase brushless motor, and includes a rotor (not shown) that is a rotating member and a stator 21 that is a fixing member (see Fig. 3). A permanent magnet is provided in the rotor system, and coils 22U, 22V, and 22W of the υ phase, the v phase, and the W phase are provided in the stator 21. Here, the battery 11 is a DC power supply, and the positive output terminal 11a is set to the high voltage side, the negative output terminal lib is made to the low voltage side, and the DC voltage is output between the positive output terminal 11a and the negative output terminal Hb. The inverter device 30 includes the inverter circuit unit 50 and the smoothing circuit unit 60 shown in Figs. 3 to 5 . Further, the inverter device 3 is as shown in Figs. 323641 11 201233038 4 and FIG. 5, and has an inverter circuit board, and is provided with the inverter circuit unit 50 and the smoothing circuit unit 60 biased therebetween. The control board 33 is provided with the above-described control unit 31 and is provided to stand upright with respect to the surface of the inverter circuit board 32. As shown in Fig. 3, the inverter circuit unit 50 includes a ϋ phase conversion circuit 51, a V phase conversion circuit 52, and a w phase conversion circuit 53. Each of the conversion circuits includes a pair of conversion elements connected in series, and is connected in series between the positive output terminal Ua and the negative output terminal ub via the smoothing circuit unit 60. The U-phase conversion circuit 51 is composed of an upper arm side (high voltage side) conversion element 51H and a lower arm side (low voltage side) conversion element 5 ratio. The v-phase conversion circuit 52 is composed of an upper arm side (high voltage side) conversion element 52H and a lower arm side (low voltage side) conversion element 52L. The W-phase conversion circuit 53 is composed of an upper arm side (high voltage side) conversion element 53H and a lower arm side (low voltage side) conversion element 53L. Further, in Fig. 3, although each conversion element is described as an FET (Electrical Field Effect Transistor), it may be converted into an IGBT (Insulated Gate Bipolar Transistor) or the like. Here, each of the conversion elements is divided into upper arm side (high voltage side) conversion elements 51H, 52H, 53H and lower arm side in the upper side of the inverter circuit board 32 in the form of the lower side or the upper side of FIG. The (low voltage side) conversion elements 51L, 52L, and 53L are arranged. The connection point between the U-phase series connection upper arm side conversion element 51H and the lower arm side conversion element 51L is connected to the coil 22U of the motor 20 via the current sensor 54U (see Fig. 3). The current sensor 54U is provided adjacent to the terminal portion 56U of 12 323641 201233038, and is provided in a circuit for connecting the upper arm side conversion element 51 and the arm side conversion element 51L of the u phase, and a terminal portion 56U for connecting the electric wire extending toward the coil 22U. The premises between (see Figure 4). The current sensor 54U detects the U-phase flowing current used for the drive control of the motor 2〇 and transmits the signal to the control unit 31. The connection point between the upper arm side switching element 52A and the lower arm side switching element 52L of the V phase connected in series is connected to the coil 22V of the motor 20 (refer to Fig. 3). In the inverter circuit board 32 shown in Fig. 4, the circuit for connecting the V-phase upper arm side conversion element 52A and the lower arm side conversion element 52L is connected to the terminal portion 56V to which the electric wire extending toward the coil 22V is connected. The connection point between the upper arm side conversion element 53H and the lower arm side conversion element 53L connected in series with the W phase is connected to the coil 22W of the motor 2 via the current sensor 54W (see Fig. 3). The current sensor 54W is provided adjacent to the terminal portion 56W and is provided between the circuit connecting the upper arm side conversion element 53H and the lower arm side conversion element 53L of the w phase and the terminal portion 56W of the electric wire extending to the coil 22W. (See Figure 4). The current sensor 54W detects the flow current of the w phase used for the drive control of the motor 2A and transmits the signal to the control unit 31. Further, the flow current of the V phase can be estimated based on the flow currents of the U phase and the W phase detected by the current sensors 54u and 54W. Further, the control unit 31 controls the switching operation of each of the conversion elements, and the inverter circuit unit 50 repeatedly turns on and off the current of each of the conversion elements, thereby converting the DC power into AC power. By supplying the AC power to the motor 2, current can be caused to flow through the motor phase 2, the v phase, the 323641 13 201233038, and the W phase coils 22U, 22V, and 22W*. The inverter 11 circuit unit 5G converts DC power into AC power, and the control unit 31 changes the voltage level of the u phase, the ¥ phase, and the w phase as time passes. Further, the motor 2Q or the inverter device 30 is provided with means for detecting the position of the rotor in the rotational direction of the motor 2G. The control unit 31 selects the switching of the on-current based on the position and the desired torque of the motor 2〇. element. On the other hand, the smoothing circuit unit 6 is disposed above the inverting H circuit board 32 adjacent to the inverter circuit unit 5A. As shown in Figs. 5 and 6, the smoothing circuit unit (10) includes a plurality of capacitors H 6 for which the fluctuation portion of the DC power is smoothed. The capacitor 61 is provided with a suction valve 61a at the top thereof. The suction valve 61a is constituted by the exterior of the thin-cut capacitor 61. 5 Live H 61a wire When the capacitor is 610,000-fault, it is used to release the gas generated inside the battery 61 to prevent cracking, and commercially available capacitors are generally provided. Further, as shown in Fig. 4, the smoothing circuit unit 6 is also connected to the electric terminal portions 62H and 62L that extend toward the electric power, similarly to the inverter circuit unit 50. Further, as shown in Fig. i, the inverter is provided with a flow space between the rear wheel 3 and the rear side of the seat 9 and the battery housing portion. The inverter device 30 has no external appearance as shown in Figs. 5 to 7 and has a box made of a highly thermally conductive alloy. The case 40 is provided with an outer surface-shaped opening portion 41 with respect to an outer shape forming a substantially rectangular parallelepiped shape. In addition, the case 4 includes a housing portion that is recessed into a concave shape from the inside of the mouth portion 41 toward the inside of the case 40. The 323641 14 201233038 the middle portion 42 houses the inverter circuit board 32 in which the respective conversion elements and capacitors 61 are housed. Alternatively, the substrate 33 is controlled to cover the components of the electronic components of the substrates. The inverter circuit board 32 is disposed close to the opening 41 of the housing portion 42. Further, the opening portion 41 of the case 40 is The cover 34 is locked by the cover 34 shown in Fig. 5 and Fig. 6. The cover 34 is locked to the case 4, and the cover 34 is fitted to the section of the __ side of the set π portion 41, without being self-contained. The outer surface of the phase 4 对应 corresponding to the opening 41 protrudes outward. The case 40 is provided with a case terminal portion 43 for connecting an electric wire or the like to the right side surface which is observable from the front side. The case terminal portion 43 is via the connecting member. 35 is connected to the three terminal portions 5, 56v, 56W of the inverter circuit portion 50, and the two terminal portions 62h and 62L of the smoothing circuit portion 60. The connecting member 35 is made of, for example, copper metal. And forming a slab extending to the box terminal portion 43 and each terminal portion 56 Further, the connecting member 35 is fixed to the case terminal portion 43 and each of the terminal portions π, 62 by the screw 35a. By doing so, the wearing area of the connecting member 35 can be expanded as much as possible, and the connecting member 35 can be attached. Therefore, the thickness of the inverter circuit board 32 is not occupied as much as possible, and a large current can flow through the connecting member 35. Further, as shown in Fig. 6, the connection box terminal portion 43 and the u phase are connected. The connecting member 35U of the terminal portion 56U is formed to be bent midway. That is, the connecting member 35U is attached to the box terminal portion 43 side and extends in the oblique direction to enable the connecting member 35V close to the V phase. In the case terminal portion 43, the end portions of the three-phase connecting member 即可 can be arranged at equal intervals. 323641 15 201233038 In addition, the side surface opposite to the side opposite to the side surface of the case tweezers 43 of the case 40 is provided. In the inverter circuit board 32, the signal line extraction port 32a is formed by partially cutting the substrate. The signal line 36 connected to the control board 33 at one end is passed through the signal line extraction port 32a. The side of the opening 41 of the circuit board 32 is separated from the one of the inverter circuit board 32 and extends in the direction of the box terminal portion 43. Accordingly, when the signal line 36 is wired, the inverter can be prevented. The electronic component mounting side of the circuit board 32 is prevented by the electronic component, and the space on the opening portion 41 side of the inverter circuit board 32 can be prevented from occupying a large space. Therefore, the inverter device 30 can be simplified and can be simplified. The signal line 36 is smoothly wired. The accommodating portion 42 is divided into two spaces of the first housing portion 42a and the second housing portion 42b as shown in Figs. 5 and 6 . The first housing portion 42a is disposed on the lower side of the inverter unit 30 provided in the electric vehicle 1 and is disposed on the left side portion of the housing unit 42 in Fig. 5 of the conversion element. The first accommodating portion 42a is a distance D1 from the one surface on the outer surface of the case 40 in which the opening portion 41 is provided to the inner surface of the case 4 对 facing the outer surface, that is, the inner surface on the lower side of the fifth figure. The same distance D2 of the accommodating portion 42b is shorter. Since the first accommodating portion 42a improves the heat radiation effect of the conversion element, each of the conversion elements is attached to the inner surface on the lower side of the fifth figure of the case 4, and is mounted. Further, the insulating measures are also in the case where a high thermal conductivity resin film material or lubricating grease is interposed between the case 4 and the conversion member. Further, the first housing portion 42a is provided with a heat sink 44 of a plurality of 323641 16 201233038 on the outer surface of the case 40. As shown in FIGS. 5 and 7 , the heat sink 44 extends away from the inverter circuit substrate 32 toward the outside (the lower side of FIG. 5 ) and is formed along the first housing portion 42 a and A plate-shaped member that extends in the direction in which the second housing portions 42b are arranged in parallel. Further, the plurality of fins 44 are arranged in such a manner that the adjacent fins 44 are arranged in a direction slightly parallel to each other at an vacant interval. As described above, the inverter device 30 is provided between the rear seat 3 and the rear wheel 3, and is attached to the seat 9 and the battery housing portion 10 (see Fig. 1). Further, as shown in Figs. 1 and 5, the inverter device 30 is mounted such that the first housing portion 42a is present on the lower side, and the heat sink 44 is present on the rear wheel 3 side. That is, the inverter device 30 is provided to directly expose the fins 44 in the air flow direction in a direct windward manner. When the electric vehicle 1 is moved, the air between the inverter device 30 and the rear wheel 3 flows in the direction indicated by the solid arrow A in FIG. 1 , and the air in the heat sink 44 flows through the fifth diagram. The direction shown by the solid arrow A. Between the adjacent fins 44, as shown in Figs. 5 and 7, a ventilating path 45 which is recessed into a concave shape is provided. The air passage 45 has a curved surface 45a at a position corresponding to the boundary between the first housing portion 42a and the second housing portion 42b. According to this, when the electric vehicle 1 is moved, the air can flow into the side opposite to the first housing portion 42a and the second housing portion 42b, that is, from the lower side of the inverter device 3A, and flows into the adjacent heat sink 44. Ventilation path 45. The air that has flowed into the air passage 45 is placed on the outer side of the case, that is, the rear side of the electric box 1 along the curved surface 45a corresponding to the boundary between the first storage portion 42a and the second storage portion 42b (see Fig. 1). ). By doing so, the inflowing air can be smoothly circulated to the air passage 45 at 17 323 641 201233038. Further, the curved surface 45a may be a sloped surface. The second accommodating portion 42b is disposed on the right side of the accommodating portion - 42 of the fifth figure of the capacitor 61, and is present on the upper side of the inverter device 3A provided in the electric vehicle 1. The second accommodating portion 42b is a distance D2 from the outer surface of the outer surface of the case 40 in which the opening portion 41 is provided to the inner surface of the case 40 facing the outer surface, that is, the inner surface on the lower side of the fifth drawing. The same distance D1 of the portion 42a is longer. When the capacitor 61 of the smoothing circuit unit 60 is, for example, an electric vehicle 1 using a 2 kW motor and requires a life of about 10,000 hours, it is necessary to form a number of electric grids. When such a capacitance is satisfied, for example, in a number of commercially available capacitors that can be mounted on the inverter circuit substrate 32, the capacitor is opened to a degree of 5 to 6 cra (see 4 and 5). Therefore, the second housing portion 42b is formed so as to have a sufficient volume which is necessary for the components of the path portion 50 with respect to the inverter covering the conversion element, and the second housing portion 42a faces the opposite direction from the opening portion 41. The shape of the volume is increased on the side of the opening 41, that is, toward the lower side of the fifth drawing. As shown in Fig. 5, the second housing portion 42b is provided with the control capacitor 33 at a position away from the inverter circuit portion 5, as shown in Fig. 5 . The control board (10) is provided so that the mounting surface of the capacitor 61 and the like of the inverter circuit board 32 is vertically erected. By doing so, since the control substrate 33 is not disposed along the surface of the inverter circuit substrate %, the simplification of the inverter device can be further improved. Further, the second accommodating portion 42b is provided with a cylindrical shape between the inner portion of the box 323641 18 201233038 and the outer portion of the case 40 facing the opening portion 41, that is, the lower side of the fifth figure. Hole 46. The hole portion 46 has one end inside the case 40 located on the inner side of the accommodating portion 42 than a part of the capacitor 61. Therefore, in order to avoid collision of the hole portion 46 and the capacitor 61, the hole portion 46 is not provided corresponding to the second accommodating portion 42b. It is arranged with the space of the capacitor 61. The pocket portion 46 is provided with a check 47 for opening and closing the cylindrical shape of the pocket portion 46. The plug 47 is attachable and detachable from the outer side of the case 40 to the hole portion 46. The opening and closing of the hole portion 46 can be performed by engaging the screw cap portion provided on the inner circumference of the hole portion 46 and the male screw portion provided on the outer circumference of the plug 47. The plug 47 is rotated as shown in Fig. 7 by inserting a hexagonal wrench or the like into the hexagonal hole 47a provided on the outer side thereof. Further, since the stopper is provided at one end of the inside of the case 40 of the hole portion 46, the pin 47 does not fall into the inside of the case 40 when twisted into the hole portion 46 from the outer side of the case 40. It can be accommodated in the cavity portion 46 without protruding from the outside of the case 4〇. Further, as shown in Fig. 5, the space of the accommodating portion 42 inside the case 40 is filled with the filler 37. Further, although the filler 37 is filled toward the inside of the accommodating portion 42 from the cover 34 of the closing opening portion, the portion of the capacitor 61, that is, the top of the suction shutter 61a, is filled with the self-filling agent 37 and the gas filling agent. For example, it is composed of a highly thermally conductive amino decanoate or an epoxy ray, and is provided for improving the fixing or moisture-proof, dust-proof, and heat-dissipating properties of the inverter circuit board 32 or the control substrate. . unit. The filler 37 flows into the inner box of the case 40 in the state shown in Fig. 8, that is, the phase of the inverter device 30 is held so that the cover 34 is positioned on the lower side, and the filler 37 is self-detached. Forming an open hole 46 323641 19 201233038 is an attempt to use. The filler 37 is placed in the blender of the inside of the box 4G, and the blender needle 1〇 is placed below the top of the portion of the capacitor 61 and is located at the top of the capacitor 61. The filler 37 is filled in the storage portion 42 to be close to The height of the blender needle is as shown by the dotted line in Fig. 8. Inverting ▲ 2 or the control substrate 33 and the conversion element are buried in the filling agent, as in the above-mentioned part of the capacitor 61, that is, the top of the suction valve a is provided. ρ is exposed from the filler 37. In this way, since the surface of the opening portion 41 on the outer surface of the phase portion 40 is present as the lower side, (four) μ nanometer. Since the I5 42a is lower than the second housing portion 42b., the filler 37 can be made to flow until the conversion element is completely covered, and the portion of the capacitor 61 can be exposed from the filler 37. Further, when the filler 37 is poured into the portion of the case 40 from the cavity portion, the top portion of the suction valve 6U can be disposed without contacting the filler 37 with the portion - of the capacitor 61 to be exposed from the filler 37. As described above, when the inverter device 30 is used as the lower surface of the opening portion 41 on the outer surface of the case 40, the height of the first storage portion 42a is lower than the height of the second storage portion 42b. According to this, even if the outer side of the case 4 is, the step D3 of the height of the first storage portion 42a is lower than the height of the second storage portion 42b (see FIG. 5). The heat sink 44 for dissipating the heat of the conversion element disposed in the first housing portion 42a can be formed. In the embodiment shown in Fig. 5, the case 4 is provided with a fin 44 having a height corresponding to the step D3. Therefore, when one surface of the opening 41 on the outer surface of the case 323641 20 201233038 is present as the lower side, the height of the first housing portion 42a and the heat sink 44 and the height of the second housing portion 42b can be made substantially equal, and The tops of the storage portions on the outside of the case 40 are made flat. As a result, the temperature rise of the inverter circuit unit 50 or the shortage of the smoothing circuit unit 60 can be released, and the outer shape of the case 40 can be substantially converged into a rectangular shape (see FIGS. 5 and 7). ). Therefore, the simplification of the inverter device 30 and the improvement in heat dissipation performance can be effectively improved. According to the above embodiment, it is possible to provide an inverter device 30 which is provided with a capacitor 61 having a large size for the conversion element, and can also effectively arrange the case 40' of the heat dissipation piece 44 to achieve a smooth simplification. And the improvement of heat dissipation performance. Further, for example, an electric vehicle 1 can be provided which is equipped with the inverter device 30 as described above. The present invention has been described with reference to the embodiments of the present invention. However, the present invention is not limited thereto, and various modifications may be added without departing from the spirit and scope of the invention. For example, in the embodiment of the present invention, the mobile body in which the inverter is placed 3 搭载 is mounted, and the automatic two-wheeled vehicle of the electric vehicle 1 shown in FIG. 1 is taken as an example. However, the automatic tricycle or the automatic four-wheeled vehicle Wheelers can also be used. In addition, the moving object to be mounted on the inverter device 30 is not limited to an electric vehicle, and may be an electric riding tool such as a motor boat or another ship or a water upstream device that uses a motor as a driving source. An electric mobile body that can be moved without a person. Among the moving bodies, the inverter device of the present invention is preferably disposed such that all or at least a portion of the heat sink 323641 21 201233038 is exposed to the outside air. Further, in the above-described embodiment, the south side of the i-th storage portion 仏 and the fins 44 when the surface of the opening/part 4i on the outer surface of the case 4G is lower is substantially equal to the height of the second accommodating portion 42b. Moreover, the top material of the accommodating portion outside the case 40 can be flat, but it is not limited to the case where such a flat surface is formed. In other words, the height of the fins 44 when the surface of the opening 41 on the outer surface of the case 4Q is the lower side is a height that can effectively dissipate the heat of the 7G piece, and is not limited to the embodiment. The height of the heat sink 44 may be higher than the top of the second housing portion 42b or lower than the top of the second housing portion 42b. (Industrial Applicability) The present invention can be utilized in an inverter device for controlling a motor. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing an electric vehicle in which an example of a moving body of an inverter device according to an embodiment of the present invention is mounted. Fig. 2 is a block diagram showing the configuration of the electric vehicle of Fig. 1. Fig. 3 is a view showing a schematic configuration of the periphery of the inverter device of Fig. 2; Fig. 4 is a perspective view showing the internal structure of the inverter device of Fig. 3. Fig. 5 is a vertical sectional side view showing the inverter device of Fig. 3. Fig. 6 is a perspective view showing the inverter device of Fig. 3 viewed from the opening side of the case. Fig. 7 is a perspective view showing the inverter device of Fig. 3 as viewed from the heat sink of the case. Fig. 8 is a plan view showing the vertical section side 22 323641 201233038 of the inverter device which is the same as that of Fig. 5, and explaining the state in which the filler is poured into the inside of the case, Fig. s [Explanation of main component symbols] 1 Electric vehicle (mobile body) 2 front wheel 3 rear wheel 4 main frame 5 swing arm 10 current housing portion 11 battery 11a positive output terminal lib negative output terminal 12 storage table 13 suspension unit 20 motor 22U > 22V '22W coil 30 inverter device 31 Control unit 32 Inverter circuit board 33 Control board 34 Covers 35, 35H, 35L, 35U, 35V, 35W Connecting member 35a Screw 36 Signal line 23 323641 201233038 37 40 41 42 42a 42b 44 45 45a 46 47 47a 50 51 52 53
51H、52H、53H51H, 52H, 53H
51L 、 52L 、 53L51L, 52L, 53L
54U 、 54W54U, 54W
56U 、 56V 、 56W 60 61 61a 62H 、 62L 充填劑 箱子 開口部 收納部 第1收納部 第2收納部 散熱片 通風路 曲面 穴部 栓 六角穴 反相器電路部 U相用轉換電路 V相用轉換電路 w相用轉換電路 上臂侧轉換元件 下臂側轉換元件 電流感測器 端子部 平滑電路部 電容器 抽氣活門 端子部 24 32364156U, 56V, 56W 60 61 61a 62H, 62L Filler box opening storage part 1st storage part 2nd storage part heat sink ventilation path curved hole part pin hexagonal inverter circuit part U phase conversion circuit V phase conversion Circuit w phase conversion circuit upper arm side conversion element lower arm side conversion element current sensor terminal portion smoothing circuit portion capacitor suction valve terminal portion 24 323641