WO2021131225A1 - Motor-assembly mounting structure - Google Patents

Motor-assembly mounting structure Download PDF

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Publication number
WO2021131225A1
WO2021131225A1 PCT/JP2020/038001 JP2020038001W WO2021131225A1 WO 2021131225 A1 WO2021131225 A1 WO 2021131225A1 JP 2020038001 W JP2020038001 W JP 2020038001W WO 2021131225 A1 WO2021131225 A1 WO 2021131225A1
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WO
WIPO (PCT)
Prior art keywords
motor
housing
motor assembly
mounting structure
load
Prior art date
Application number
PCT/JP2020/038001
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French (fr)
Japanese (ja)
Inventor
佑磨 田中
渡邉　和宏
Original Assignee
株式会社明電舎
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社明電舎 filed Critical 株式会社明電舎
Priority to JP2020559594A priority Critical patent/JP6870786B1/en
Priority to CN202080085883.4A priority patent/CN114829175B/en
Publication of WO2021131225A1 publication Critical patent/WO2021131225A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption

Definitions

  • the present invention relates to a mounting structure of a motor assembly for an electric vehicle.
  • Patent Document 1 in order to prevent the battery unit from being destroyed due to a collision with a power unit composed of an electric motor or the like in the event of a collision, fragile portions are formed on two brackets in the vehicle front-rear direction that support the power unit.
  • the configuration to be used is disclosed.
  • Patent Document 2 in order to prevent the deformation of the side member from being hindered by the control component of the motor attached to the crossbar in the event of a collision, it is controlled by a bracket having a separating portion that separates when a collision load is applied.
  • the configuration for attaching the component to the crossbar is disclosed.
  • the inverter circuit including the high power part is covered with a housing to prevent electric shock, but there is a strong demand for a structure that can prevent the high power part from being exposed to the outside even in the event of a collision. There is.
  • the present invention has been made in view of the above circumstances, and provides a mounting structure of a motor assembly capable of suppressing exposure of a high-power portion to the outside even in the event of a collision of an electric vehicle.
  • One aspect of the present invention is a mounting structure of a motor assembly for an electric vehicle, in which a first housing for accommodating the motor and a motor mounted on the first housing on the opposite load side of the motor and including a high electric power portion are controlled.
  • a motor assembly having a second housing for accommodating parts, a first fixing portion for fixing the motor assembly to structural parts of an electric vehicle on the load side of the motor, and a second housing on the non-load side of the motor.
  • a second fixing portion for fixing to a structural component is provided.
  • the second housing is vulnerable to a mount portion for fixing the motor assembly to a structural component and a fragile portion that breaks when the second housing receives a load exceeding a predetermined value at the time of a vehicle collision to separate the mount portion from the second housing. It has a part and.
  • the second housing may have a main body portion in which an opening is formed and a lid portion that covers the opening of the main body portion. Further, the mount portion and the fragile portion may be provided on the lid portion.
  • the fragile portion may be a notch or a slit provided in the wall surface of the second housing.
  • the second housing may have a protector that is formed so as to project in a direction intersecting the rotation axis of the motor and that receives a collision load at the time of a vehicle collision.
  • the notch or the slit may be formed so as to extend in a direction intersecting the protruding direction of the protector on the wall surface provided with the mount portion.
  • the mount portion may be arranged at a position farther from the motor than the protector.
  • the mounting structure of the motor assembly according to one aspect of the present invention, it is possible to suppress the exposure of the high-power portion to the outside even in the event of a collision of an electric vehicle.
  • FIG. 1st Embodiment It is a perspective view which shows an example of the motor assembly of 1st Embodiment. It is a partially enlarged perspective view of the circuit housing shown in FIG. It is a front view which shows an example of the mounting structure of the motor assembly in 1st Embodiment. It is a top view of FIG. It is a side view which partially enlarged the circuit housing of 2nd Embodiment. It is a partially enlarged perspective view of the circuit housing of 2nd Embodiment.
  • the XYZ coordinate system is shown as a three-dimensional Cartesian coordinate system as appropriate.
  • the Z-axis direction is parallel to the rotation axis AX described later.
  • the X-axis direction is orthogonal to the Z-axis direction and corresponds to the paper depth direction of FIG.
  • the Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction, and corresponds to the vertical direction in FIG.
  • FIG. 1 is a perspective view showing an example of the motor assembly of the first embodiment.
  • FIG. 2 is a partially enlarged perspective view of the circuit housing shown in FIG.
  • FIG. 3 is a front view showing an example of the mounting structure of the motor assembly according to the first embodiment.
  • FIG. 4 is a plan view of FIG.
  • the motor assembly 1 shown in FIG. 1 includes a motor housing 2 and a circuit housing 3.
  • the motor housing 2 and the circuit housing 3 are both formed by casting, for example.
  • the motor housing 2 is an example of the first housing, and houses a motor M including a stator in which a coil is wound and a rotor in which a permanent magnet is arranged (see FIGS. 3 and 4).
  • a motor M including a stator in which a coil is wound and a rotor in which a permanent magnet is arranged (see FIGS. 3 and 4).
  • the rotation axis of the motor M is indicated by reference numeral AX, if necessary.
  • a speed reducer including a gear for transmitting power from the shaft of the motor M on the load side of the motor M (on the right side in the drawings of FIGS. 3 and 4) in the motor assembly 1. 4 is attached.
  • the speed reducer 4 is fixed to the structural component 5 on the vehicle side at two locations, the upper side and the lower side shown in FIG.
  • the fixed portion of the motor assembly 1 with the structural component 5 on the load side is also referred to as a first fixed portion 6.
  • the circuit housing 3 is attached to the motor housing 2 on the opposite load side (left side in the drawings of FIGS. 3 and 4) of the motor M.
  • the circuit housing 3 is an example of the second housing, and houses an inverter circuit (not shown) inside the circuit housing 3.
  • the circuit housing 3 has a box-shaped main body 11 having an opening on one side away from the motor M, and a lid 12 covering the opening of the main body 11.
  • the inverter circuit housed in the circuit housing 3 converts the DC voltage from the external power supply (not shown) into alternating current and supplies it to the coil of the motor M.
  • the circuit housing 3 houses a high-speed switching element such as an IGBT, a gate board, a capacitor, a discharge resistor, and control components constituting an inverter circuit such as a control board.
  • the high-speed switching element and the gate substrate are examples of high-power parts.
  • a protector 13 is formed on the main body 11 of the circuit housing 3 so as to project in a direction intersecting the rotation axis AX of the motor M (X direction in the drawing) and has a function of first receiving a collision load at the time of a vehicle collision. It is provided. Although not particularly limited, for example, the motor assembly 1 is attached to the electric vehicle with the protector 13 facing the front side of the electric vehicle.
  • the lid portion 12 of the circuit housing 3 has a convex portion 14 having a shape bulging in the direction opposite to the load side. Further, on the wall surface 14a of the convex portion 14 of the lid portion 12 facing the upper side in FIG. 3, a protrusion protruding outward in a direction intersecting the protruding direction of the rotation axis AX of the motor M and the protector 13 (Y direction in the drawing).
  • a shaped mount portion 15 is provided.
  • the mount portion 15 is formed with a bolt hole 15a.
  • the mount portion 15 faces the structural component 7 on the vehicle side in the projecting direction (Y direction in the drawing), and for example, by screwing a bolt into the bolt hole 15a of the mount portion 15, the mount portion 15 and the structural component on the vehicle side are screwed. 7 and are fixed.
  • the fixed portion with the structural component 7 via the mount portion 15 on the opposite load side of the motor assembly 1 is also referred to as a second fixed portion 8.
  • a notch 16 is formed in the vicinity of the mount portion 15 on the wall surface 14a of the convex portion 14 of the lid portion 12.
  • the notches 16 are notched so as to extend in the Z direction intersecting the projecting direction (X direction) of the protector 13, and are formed in pairs on the wall surface 14a of the convex portion 14 so as to face each other.
  • the notch 16 is an example of a fragile portion, and when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12, the mount portion 15 is attached to the base portion of the lid portion 12. It has the function of making it easier to break. By breaking the mount portion 15, the mount portion 15 fixed to the structural component 7 can be separated from the lid portion 12 in the event of a vehicle collision.
  • specifications such as the shape and dimensions of the notch 16 and the position of the notch 16 can be appropriately set according to conditions such as the strength of the lid portion 12 and the set load for breaking the mount portion 15.
  • a notch specification is adopted in which a vehicle collision test is performed with the motor assembly 1 attached to the vehicle, and the breakage of the mount portion 15 can be confirmed in the test.
  • the motor mounting structure of the first embodiment includes a motor assembly 1 that integrally includes a motor housing 2 and a circuit housing 3, and a speed reducer 4 that receives power from the motor M.
  • the motor assembly 1 has a first fixing portion 6 fixed to a structural component 5 on the vehicle side via a speed reducer 4 on the load side of the motor M, and is attached to the circuit housing 3 on the non-load side of the motor M. It has a second fixing portion 8 that is fixed to the structural component 7 on the vehicle side via the provided mounting portion 15.
  • the wall surface 14a on which the mount portion 15 is provided in the circuit housing 3 is formed with a notch 16 that promotes breakage of the mount portion 15 when a load of a predetermined value or more is applied.
  • the motor assembly 1 In the normal state (non-collision), the motor assembly 1 is fixed to the structural parts 5 and 7 on the vehicle side on both the non-load side and the load side, respectively. Therefore, in the motor mounting structure of the first embodiment, the heavy motor assembly 1 can be stably fixed to the electric vehicle.
  • the motor assembly 1 receives a collision load due to a vehicle collision accident, the motor assembly 1 is displaced as follows. In the following description, it is assumed that the collision load is input to the protector 13 of the motor assembly 1 from the direction facing the protruding direction of the protector 13.
  • the motor assembly 1 moves the motor M at the position of the protector 13 between the first fixing portion 6 on the load side and the second fixing portion 8 on the unload side.
  • a large load is received from the direction intersecting the rotation axis AX.
  • the first fixing portion 6 and the second fixing portion 8 supporting the motor assembly 1 on both sides bear the load, respectively, as in the case of applying the eccentric load to the beam fixed at both ends. ..
  • the wall surface 14a of the lid portion 12 provided with the mount portion 15 in the circuit housing 3 is formed with a notch 16 that promotes breakage of the mount portion 15 when a load of a predetermined value or more is applied. Therefore, when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12, the collision load and the shear stress due to the reaction force from the structural component 7 are concentrated on the notch 16, and the mount portion 15 is subjected to. It breaks at the root of the lid 12. As a result, the mount portion 15 fixed to the structural component 7 is separated from the lid portion 12 in the event of a vehicle collision.
  • the mount portion 15 When the mount portion 15 was separated from the lid portion 12 due to the breakage of the mount portion 15, the fixing of the motor assembly 1 on the opposite load side was released, and the motor assembly 1 was fixed by the first fixing portion 6 in the Z-axis direction. It becomes cantilevered.
  • the first fixing portion 6 on the load side supporting the motor assembly 1 bears the load and is more than the protector 13 that receives the collision load.
  • the non-load side is the free end. That is, the load of the lid portion 12 located at a position farther from the motor M than the protector 13 on the non-load side is much smaller than that before the break of the mount portion 15.
  • the lid portion 12 is less likely to be damaged after the mount portion 15 is broken, so that it is possible to prevent the strong electric portion of the inverter circuit housed in the circuit housing 3 from being exposed to the outside due to the damage of the lid portion 12 in the event of a collision. ..
  • ⁇ Second Embodiment> 5 and 6 are views showing a configuration in the vicinity of the mount portion in the motor mounting structure of the electric vehicle according to the second embodiment.
  • the same components as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.
  • a groove-shaped slit 17 having an arcuate cross section intersects the projecting direction (X direction) of the protector 13. It is formed so as to extend in the Z direction.
  • the portion where the slit 17 is formed on the wall surface 14a of the convex portion 14 has a thinner wall thickness than the portion without the slit 17, and thus functions in the same manner as the notch of the first embodiment. That is, the slit 17 has a function of easily breaking the mount portion 15 at the root portion with the lid portion 12 when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12. ..
  • the specifications such as the shape and dimensions of the slit 17 and the position of the slit 17 depend on the strength of the lid portion 12 and the set load for breaking the mount portion 15, as in the case of the notch of the first embodiment. Can be set as appropriate
  • the same effect as that of the first embodiment can be obtained by the configuration of the slit 17 of the second embodiment.
  • the motor assembly 1 receives a collision load from the direction of the protector 13 (for example, the front side of the electric vehicle) has been described.
  • the motor assembly 1 receives a collision load from the side opposite to the direction of the protector 13 (for example, the rear side of the electric vehicle)
  • the same effect as that of the above embodiment can be obtained.
  • the mount portion 15 and the fragile portion are provided in the lid portion 12
  • the arrangement of the mount portion 15 and the fragile portion is limited to the configuration of the above embodiment. It's not a thing.
  • the mount portion 15 and the fragile portion may be arranged at a portion opposite to the forming position of the protector 13 in the X direction.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Motor Or Generator Frames (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

This motor-assembly mounting structure for an electric-vehicle comprises: a motor assembly that has a first housing for accommodating a motor, and a second housing attached to the first housing on the load-opposite end of the motor, for accommodating control components of the motor including the power electrics; a first anchoring part for anchoring the motor assembly to a structural part of the electric vehicle on the load end of the motor; and a second anchoring part for anchoring the second housing to the structural part on the load-opposite end of the motor. The second housing has a mount section for anchoring the motor assembly to the structural part, and a breakaway section that breaks when the second housing is subjected to a load exceeding a predetermined value during a vehicle collision, thereby causing the mount section to separate from the second housing.

Description

モータ組立体の取付構造Mounting structure of motor assembly
　本発明は、電動車両用のモータ組立体の取付構造に関する。 The present invention relates to a mounting structure of a motor assembly for an electric vehicle.
　近年、環境負荷低減の観点から、ＥＶ，ＨＥＶ，ＰＨＥＶ，ＦＣＶ等のように動力源としてモータを搭載した電動車両の開発や普及が進んでいる。また、電動車両での衝突事故を想定して、車体とモータ等の取り付けを工夫することも種々提案されている。 In recent years, from the viewpoint of reducing the environmental load, the development and popularization of electric vehicles equipped with a motor as a power source such as EV, HEV, PHEV, FCV, etc. are progressing. In addition, various proposals have been made to devise the attachment of the vehicle body and the motor, etc., assuming a collision accident in an electric vehicle.
　例えば、特許文献１には、衝突事故のときに電動モータ等で構成されるパワーユニットとの衝突によるバッテリユニットの破壊を防ぐために、パワーユニットを支持する車両前後方向の２つのブラケットにそれぞれ脆弱部を形成する構成が開示されている。
　また、特許文献２には、クロスバーに取り付けたモータの制御部品により衝突事故時にサイドメンバの変形が阻害されることを抑制するために、衝突荷重を受けると分離する分離部を有するブラケットで制御部品をクロスバーに取り付ける構成が開示されている。 For example, in Patent Document 1, in order to prevent the battery unit from being destroyed due to a collision with a power unit composed of an electric motor or the like in the event of a collision, fragile portions are formed on two brackets in the vehicle front-rear direction that support the power unit. The configuration to be used is disclosed.
Further, in Patent Document 2, in order to prevent the deformation of the side member from being hindered by the control component of the motor attached to the crossbar in the event of a collision, it is controlled by a bracket having a separating portion that separates when a collision load is applied. The configuration for attaching the component to the crossbar is disclosed.
特許第４８８８６５７号公報Japanese Patent No. 4888657 特許第５６５２６０４号公報Japanese Patent No. 5652604
　電動車両用のモータにおいては、車両の組立作業性の向上や省スペース化のために、モータと当該モータを制御するためのインバータ回路を一体化して１つのモジュールとすることも検討されている。この種のモジュール化されたモータ組立体において、強電部を含むインバータ回路は感電防止のためにハウジングで覆われるが、衝突事故時にも強電部の外部への露出を抑止できる構造が強く要望されている。 For motors for electric vehicles, in order to improve vehicle assembly workability and save space, it is also being considered to integrate the motor and the inverter circuit for controlling the motor into one module. In this kind of modularized motor assembly, the inverter circuit including the high power part is covered with a housing to prevent electric shock, but there is a strong demand for a structure that can prevent the high power part from being exposed to the outside even in the event of a collision. There is.
　本発明は、上記の状況に鑑みてなされたものであって、電動車両の衝突事故時にも強電部の外部への露出を抑止できるモータ組立体の取付構造を提供する。 The present invention has been made in view of the above circumstances, and provides a mounting structure of a motor assembly capable of suppressing exposure of a high-power portion to the outside even in the event of a collision of an electric vehicle.
　本発明の一態様は、電動車両用のモータ組立体の取付構造であって、モータを収容する第１ハウジングと、モータの反負荷側において第１ハウジングに取り付けられ、強電部を含むモータの制御部品を収容する第２ハウジングと、を有するモータ組立体と、モータ組立体をモータの負荷側で電動車両の構造部品に固定する第１の固定部と、モータの反負荷側で第２ハウジングを構造部品に固定する第２の固定部と、を備える。第２ハウジングは、モータ組立体を構造部品に固定するためのマウント部と、車両衝突時に第２ハウジングが所定値以上の荷重を受けたときに破断して第２ハウジングからマウント部を離脱させる脆弱部と、を有する。 One aspect of the present invention is a mounting structure of a motor assembly for an electric vehicle, in which a first housing for accommodating the motor and a motor mounted on the first housing on the opposite load side of the motor and including a high electric power portion are controlled. A motor assembly having a second housing for accommodating parts, a first fixing portion for fixing the motor assembly to structural parts of an electric vehicle on the load side of the motor, and a second housing on the non-load side of the motor. A second fixing portion for fixing to a structural component is provided. The second housing is vulnerable to a mount portion for fixing the motor assembly to a structural component and a fragile portion that breaks when the second housing receives a load exceeding a predetermined value at the time of a vehicle collision to separate the mount portion from the second housing. It has a part and.
　上記のモータ組立体の取付構造において、第２ハウジングは、開口が形成された本体部と、本体部の開口を覆う蓋部と、を有していてもよい。また、マウント部および脆弱部は、蓋部に設けられていてもよい。 In the mounting structure of the motor assembly described above, the second housing may have a main body portion in which an opening is formed and a lid portion that covers the opening of the main body portion. Further, the mount portion and the fragile portion may be provided on the lid portion.
　上記のモータ組立体の取付構造において、脆弱部は、第２ハウジングの壁面に設けられた切り欠きまたはスリットであってもよい。
　また、上記の第２ハウジングは、モータの回転軸と交差する方向に突出して形成されるとともに車両衝突時の衝突荷重を受けるプロテクタを有していてもよい。
　また、上記の切り欠きまたは上記のスリットは、マウント部が設けられた壁面において、プロテクタの突出方向と交差する方向に延在するように形成されていてもよい。
　また、上記のマウント部は、プロテクタよりもモータから離れた位置に配置されてもよい。 In the mounting structure of the motor assembly described above, the fragile portion may be a notch or a slit provided in the wall surface of the second housing.
Further, the second housing may have a protector that is formed so as to project in a direction intersecting the rotation axis of the motor and that receives a collision load at the time of a vehicle collision.
Further, the notch or the slit may be formed so as to extend in a direction intersecting the protruding direction of the protector on the wall surface provided with the mount portion.
Further, the mount portion may be arranged at a position farther from the motor than the protector.
　本発明の一態様のモータ組立体の取付構造によれば、電動車両の衝突事故時にも強電部の外部への露出を抑止できる。 According to the mounting structure of the motor assembly according to one aspect of the present invention, it is possible to suppress the exposure of the high-power portion to the outside even in the event of a collision of an electric vehicle.
第１実施形態のモータ組立体の一例を示す斜視図である。It is a perspective view which shows an example of the motor assembly of 1st Embodiment. 図１に示す回路ハウジングを部分拡大した斜視図である。It is a partially enlarged perspective view of the circuit housing shown in FIG. 第１実施形態におけるモータ組立体の取付構造の一例を示す正面図である。It is a front view which shows an example of the mounting structure of the motor assembly in 1st Embodiment. 図３の平面図である。It is a top view of FIG. 第２実施形態の回路ハウジングを部分拡大した側面図である。It is a side view which partially enlarged the circuit housing of 2nd Embodiment. 第２実施形態の回路ハウジングを部分拡大した斜視図である。It is a partially enlarged perspective view of the circuit housing of 2nd Embodiment.
　以下、本発明の実施形態について図面を参照して説明する。
　実施形態では説明を分かり易くするため、本発明の主要部以外の構造や要素については、簡略化または省略して説明する。また、図面において、同じ要素には同じ符号を付す。なお、図面に示す各要素の形状、寸法などは模式的に示したもので、実際の形状、寸法などを示すものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the embodiment, in order to make the explanation easy to understand, the structures and elements other than the main part of the present invention will be described in a simplified or omitted manner. Further, in the drawings, the same elements are designated by the same reference numerals. It should be noted that the shapes, dimensions, etc. of each element shown in the drawings are schematically shown, and do not indicate the actual shapes, dimensions, etc.
　また、図面においては、適宜３次元直交座標系としてＸＹＺ座標系を示す。ＸＹＺ座標系において、Ｚ軸方向は後述の回転軸ＡＸと平行な方向とする。Ｘ軸方向は、Ｚ軸方向と直交する方向であって、図３の紙面奥行方向に対応する。Ｙ軸方向は、Ｘ軸方向とＺ軸方向との両方と直交する方向であって、図３の上下方向に対応する。 Further, in the drawings, the XYZ coordinate system is shown as a three-dimensional Cartesian coordinate system as appropriate. In the XYZ coordinate system, the Z-axis direction is parallel to the rotation axis AX described later. The X-axis direction is orthogonal to the Z-axis direction and corresponds to the paper depth direction of FIG. The Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction, and corresponds to the vertical direction in FIG.
＜第１実施形態＞
　図１から図４を参照しつつ、第１実施形態におけるモータ組立体とその取付構造を説明する。
　図１は、第１実施形態のモータ組立体の一例を示す斜視図である。図２は、図１に示す回路ハウジングを部分拡大した斜視図である。図３は、第１実施形態におけるモータ組立体の取付構造の一例を示す正面図である。図４は、図３の平面図である。 <First Embodiment>
The motor assembly and its mounting structure according to the first embodiment will be described with reference to FIGS. 1 to 4.
FIG. 1 is a perspective view showing an example of the motor assembly of the first embodiment. FIG. 2 is a partially enlarged perspective view of the circuit housing shown in FIG. FIG. 3 is a front view showing an example of the mounting structure of the motor assembly according to the first embodiment. FIG. 4 is a plan view of FIG.
　図１に示すモータ組立体１は、モータハウジング２と、回路ハウジング３とを備えている。モータハウジング２および回路ハウジング３は、例えばいずれも鋳造によって形成される。 The motor assembly 1 shown in FIG. 1 includes a motor housing 2 and a circuit housing 3. The motor housing 2 and the circuit housing 3 are both formed by casting, for example.
　モータハウジング２は、第１ハウジングの一例であって、コイルが巻回されたステータと、永久磁石が配置されたロータを備えるモータＭが収容される（図３、図４参照）。なお、図面において、必要に応じてモータＭの回転軸を符号ＡＸで示す。 The motor housing 2 is an example of the first housing, and houses a motor M including a stator in which a coil is wound and a rotor in which a permanent magnet is arranged (see FIGS. 3 and 4). In the drawings, the rotation axis of the motor M is indicated by reference numeral AX, if necessary.
　図３、図４に示すように、モータ組立体１においてモータＭの負荷側（図３、図４の図中右側）には、モータＭのシャフトからの動力を伝達するギアなどを含む減速機４が取り付けられる。減速機４は、図３に示す上側および下側の２か所で車両側の構造部品５に固定される。モータ組立体１の負荷側における構造部品５との固定部を第１の固定部６とも称する。 As shown in FIGS. 3 and 4, a speed reducer including a gear for transmitting power from the shaft of the motor M on the load side of the motor M (on the right side in the drawings of FIGS. 3 and 4) in the motor assembly 1. 4 is attached. The speed reducer 4 is fixed to the structural component 5 on the vehicle side at two locations, the upper side and the lower side shown in FIG. The fixed portion of the motor assembly 1 with the structural component 5 on the load side is also referred to as a first fixed portion 6.
　一方、モータ組立体１においてモータＭの反負荷側（図３、図４の図中左側）には、回路ハウジング３がモータハウジング２に取り付けられている。回路ハウジング３は、第２ハウジングの一例であって、その内部にインバータ回路（不図示）を収容する。回路ハウジング３は、モータＭから離間する一面側が開口された箱体状の本体部１１と、本体部１１の開口を覆う蓋部１２を有する。 On the other hand, in the motor assembly 1, the circuit housing 3 is attached to the motor housing 2 on the opposite load side (left side in the drawings of FIGS. 3 and 4) of the motor M. The circuit housing 3 is an example of the second housing, and houses an inverter circuit (not shown) inside the circuit housing 3. The circuit housing 3 has a box-shaped main body 11 having an opening on one side away from the motor M, and a lid 12 covering the opening of the main body 11.
　回路ハウジング３に収容されるインバータ回路は、外部電源（不図示）からの直流電圧を交流に変換してモータＭのコイルに供給する。例えば、回路ハウジング３には、ＩＧＢＴなどの高速スイッチング素子、ゲート基板、コンデンサ、放電抵抗および制御基板などのインバータ回路を構成する制御部品がそれぞれ収容される。なお、高速スイッチング素子およびゲート基板は、強電部の一例である。 The inverter circuit housed in the circuit housing 3 converts the DC voltage from the external power supply (not shown) into alternating current and supplies it to the coil of the motor M. For example, the circuit housing 3 houses a high-speed switching element such as an IGBT, a gate board, a capacitor, a discharge resistor, and control components constituting an inverter circuit such as a control board. The high-speed switching element and the gate substrate are examples of high-power parts.
　また、回路ハウジング３の本体部１１には、モータＭの回転軸ＡＸと交差する方向（図中Ｘ方向）に突出して形成され、車両衝突時の衝突荷重を最初に受ける機能を担うプロテクタ１３が設けられている。特に限定するものではないが、例えば、モータ組立体１は、プロテクタ１３が電動車両の前側に臨む状態で電動車両に取り付けられる。 Further, a protector 13 is formed on the main body 11 of the circuit housing 3 so as to project in a direction intersecting the rotation axis AX of the motor M (X direction in the drawing) and has a function of first receiving a collision load at the time of a vehicle collision. It is provided. Although not particularly limited, for example, the motor assembly 1 is attached to the electric vehicle with the protector 13 facing the front side of the electric vehicle.
　回路ハウジング３の蓋部１２は、反負荷側の方向に膨らんだ形状の凸部１４を有している。また、蓋部１２の凸部１４において図３中上側に臨む壁面１４ａには、モータＭの回転軸ＡＸおよびプロテクタ１３の突出方向と交差する方向（図中Ｙ方向）へ外向きに突出する突起状のマウント部１５が設けられている。マウント部１５は、ボルト孔１５ａが形成されている。マウント部１５は、その突出方向（図中Ｙ方向）において車両側の構造部品７に臨み、例えばマウント部１５のボルト孔１５ａにボルトを螺合することで、マウント部１５と車両側の構造部品７とが固定される。モータ組立体１の反負荷側におけるマウント部１５を介した構造部品７との固定部を第２の固定部８とも称する。 The lid portion 12 of the circuit housing 3 has a convex portion 14 having a shape bulging in the direction opposite to the load side. Further, on the wall surface 14a of the convex portion 14 of the lid portion 12 facing the upper side in FIG. 3, a protrusion protruding outward in a direction intersecting the protruding direction of the rotation axis AX of the motor M and the protector 13 (Y direction in the drawing). A shaped mount portion 15 is provided. The mount portion 15 is formed with a bolt hole 15a. The mount portion 15 faces the structural component 7 on the vehicle side in the projecting direction (Y direction in the drawing), and for example, by screwing a bolt into the bolt hole 15a of the mount portion 15, the mount portion 15 and the structural component on the vehicle side are screwed. 7 and are fixed. The fixed portion with the structural component 7 via the mount portion 15 on the opposite load side of the motor assembly 1 is also referred to as a second fixed portion 8.
　また、図１、図２に示すように、蓋部１２の凸部１４の壁面１４ａにおいてマウント部１５の近傍には、切り欠き１６が形成されている。例えば、切り欠き１６は、プロテクタ１３の突出方向（Ｘ方向）と交差するＺ方向に延在するように切り欠かれ、互いに対向するように凸部１４の壁面１４ａに一対形成されている。 Further, as shown in FIGS. 1 and 2, a notch 16 is formed in the vicinity of the mount portion 15 on the wall surface 14a of the convex portion 14 of the lid portion 12. For example, the notches 16 are notched so as to extend in the Z direction intersecting the projecting direction (X direction) of the protector 13, and are formed in pairs on the wall surface 14a of the convex portion 14 so as to face each other.
　切り欠き１６は、脆弱部の一例であって、モータ組立体１が衝突荷重を受けて蓋部１２に所定値以上の荷重がかかるときに、マウント部１５を蓋部１２との根元の部位で破断させやすくする機能を担う。マウント部１５が破断することで、構造部品７に固定されているマウント部１５を車両衝突時には蓋部１２から離脱させることができる。 The notch 16 is an example of a fragile portion, and when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12, the mount portion 15 is attached to the base portion of the lid portion 12. It has the function of making it easier to break. By breaking the mount portion 15, the mount portion 15 fixed to the structural component 7 can be separated from the lid portion 12 in the event of a vehicle collision.
　また、切り欠き１６の形状、寸法および切り欠き１６の位置などの仕様は、蓋部１２の強度や、マウント部１５を破断させる設定荷重などの条件に応じて適宜設定することができる。例えば、車両にモータ組立体１を取り付けた状態で車両の衝突試験を行い、当該試験においてマウント部１５の破断が確認できた切り欠きの仕様が採用される。 Further, specifications such as the shape and dimensions of the notch 16 and the position of the notch 16 can be appropriately set according to conditions such as the strength of the lid portion 12 and the set load for breaking the mount portion 15. For example, a notch specification is adopted in which a vehicle collision test is performed with the motor assembly 1 attached to the vehicle, and the breakage of the mount portion 15 can be confirmed in the test.
　第１実施形態のモータ取付構造は、モータハウジング２と回路ハウジング３を一体に備えるモータ組立体１と、モータＭの動力を受ける減速機４とを有する。モータ組立体１は、モータＭの負荷側では減速機４を介して車両側の構造部品５に固定される第１の固定部６を有し、モータＭの反負荷側では、回路ハウジング３に設けられたマウント部１５を介して車両側の構造部品７に固定される第２の固定部８を有する。そして、回路ハウジング３においてマウント部１５が設けられる壁面１４ａには、所定値以上の荷重を受けたときにマウント部１５の破断を促す切り欠き１６が形成されている。 The motor mounting structure of the first embodiment includes a motor assembly 1 that integrally includes a motor housing 2 and a circuit housing 3, and a speed reducer 4 that receives power from the motor M. The motor assembly 1 has a first fixing portion 6 fixed to a structural component 5 on the vehicle side via a speed reducer 4 on the load side of the motor M, and is attached to the circuit housing 3 on the non-load side of the motor M. It has a second fixing portion 8 that is fixed to the structural component 7 on the vehicle side via the provided mounting portion 15. The wall surface 14a on which the mount portion 15 is provided in the circuit housing 3 is formed with a notch 16 that promotes breakage of the mount portion 15 when a load of a predetermined value or more is applied.
　通常時（非衝突時）において、モータ組立体１は反負荷側と負荷側の両側で車両側の構造部品５，７にそれぞれ固定される。そのため、第１実施形態のモータ取付構造は、重量のあるモータ組立体１を電動車両に安定して固定することができる。 In the normal state (non-collision), the motor assembly 1 is fixed to the structural parts 5 and 7 on the vehicle side on both the non-load side and the load side, respectively. Therefore, in the motor mounting structure of the first embodiment, the heavy motor assembly 1 can be stably fixed to the electric vehicle.
　一方、車両の衝突事故によりモータ組立体１が衝突荷重を受けたときには、モータ組立体１は以下のように変位する。なお、以下の説明では、プロテクタ１３の突出方向と対向する方向から、モータ組立体１のプロテクタ１３に衝突荷重が入力される場合を前提とする。 On the other hand, when the motor assembly 1 receives a collision load due to a vehicle collision accident, the motor assembly 1 is displaced as follows. In the following description, it is assumed that the collision load is input to the protector 13 of the motor assembly 1 from the direction facing the protruding direction of the protector 13.
　プロテクタ１３に衝突荷重が入力されると、モータ組立体１は、負荷側の第１の固定部６と反負荷側の第２の固定部８の間にあるプロテクタ１３の位置で、モータＭの回転軸ＡＸと交差する方向から大きな荷重を受けることになる。この状態では、両端固定された梁に偏芯荷重を負荷する場合と同様に、モータ組立体１を両側で支持している第１の固定部６と第２の固定部８がそれぞれ荷重を担う。 When a collision load is input to the protector 13, the motor assembly 1 moves the motor M at the position of the protector 13 between the first fixing portion 6 on the load side and the second fixing portion 8 on the unload side. A large load is received from the direction intersecting the rotation axis AX. In this state, the first fixing portion 6 and the second fixing portion 8 supporting the motor assembly 1 on both sides bear the load, respectively, as in the case of applying the eccentric load to the beam fixed at both ends. ..
　ここで、回路ハウジング３においてマウント部１５が設けられている蓋部１２の壁面１４ａには、所定値以上の荷重を受けたときにマウント部１５の破断を促す切り欠き１６が形成されている。そのため、モータ組立体１が衝突荷重を受けて蓋部１２に所定値以上の荷重がかかると、衝突荷重および構造部品７からの反力によるせん断応力が切り欠き１６に集中し、マウント部１５が蓋部１２との根元の部位で破断する。これにより、構造部品７に固定されているマウント部１５が車両衝突時に蓋部１２から離脱する。 Here, the wall surface 14a of the lid portion 12 provided with the mount portion 15 in the circuit housing 3 is formed with a notch 16 that promotes breakage of the mount portion 15 when a load of a predetermined value or more is applied. Therefore, when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12, the collision load and the shear stress due to the reaction force from the structural component 7 are concentrated on the notch 16, and the mount portion 15 is subjected to. It breaks at the root of the lid 12. As a result, the mount portion 15 fixed to the structural component 7 is separated from the lid portion 12 in the event of a vehicle collision.
　マウント部１５の破断によりマウント部１５が蓋部１２から離脱すると、モータ組立体１の反負荷側の固定が解除され、モータ組立体１はＺ軸方向において第１の固定部６で固定された片持ちの状態となる。この状態では、片持ち梁に偏芯荷重を負荷する場合と同様に、モータ組立体１を支持している負荷側の第１の固定部６が荷重を担い、衝突荷重を受けるプロテクタ１３よりも反負荷側は自由端となる。つまり、反負荷側においてプロテクタ１３よりもモータＭから離れた位置にある蓋部１２は、マウント部１５の破断前と比べると荷重の負荷が非常に小さくなる。これにより、マウント部１５の破断後は蓋部１２が破損しにくくなるので、回路ハウジング３に収容されるインバータ回路の強電部が衝突事故時に蓋部１２の破損によって外部に露出することを抑止できる。 When the mount portion 15 was separated from the lid portion 12 due to the breakage of the mount portion 15, the fixing of the motor assembly 1 on the opposite load side was released, and the motor assembly 1 was fixed by the first fixing portion 6 in the Z-axis direction. It becomes cantilevered. In this state, as in the case of applying an eccentric load to the cantilever, the first fixing portion 6 on the load side supporting the motor assembly 1 bears the load and is more than the protector 13 that receives the collision load. The non-load side is the free end. That is, the load of the lid portion 12 located at a position farther from the motor M than the protector 13 on the non-load side is much smaller than that before the break of the mount portion 15. As a result, the lid portion 12 is less likely to be damaged after the mount portion 15 is broken, so that it is possible to prevent the strong electric portion of the inverter circuit housed in the circuit housing 3 from being exposed to the outside due to the damage of the lid portion 12 in the event of a collision. ..
＜第２実施形態＞
　図５、図６は、第２実施形態における電動車両のモータ取付構造におけるマウント部近傍の構成を示す図である。以下の説明において、第１実施形態と同様の構成には同じ符号を付して重複説明を省略する。 <Second Embodiment>
5 and 6 are views showing a configuration in the vicinity of the mount portion in the motor mounting structure of the electric vehicle according to the second embodiment. In the following description, the same components as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.
　第２実施形態では、蓋部１２の凸部１４におけるマウント部１５の近傍には、脆弱部の一例として、断面円弧状をなす溝状のスリット１７がプロテクタ１３の突出方向（Ｘ方向）と交差するＺ方向に延在するように形成されている。凸部１４の壁面１４ａにおけるスリット１７の形成箇所は、スリット１７のない箇所に比べて壁の肉厚が薄くなるので、第１実施形態の切り欠きと同様に機能する。つまり、スリット１７は、モータ組立体１が衝突荷重を受けて蓋部１２に所定値以上の荷重がかかるときに、マウント部１５を蓋部１２との根元の部位で破断させやすくする機能を担う。なお、スリット１７の形状、寸法およびスリット１７の位置などの仕様は、第１実施形態の切り欠きと同様に、蓋部１２の強度や、マウント部１５を破断させる設定荷重などの条件に応じて適宜設定することができる In the second embodiment, in the vicinity of the mount portion 15 in the convex portion 14 of the lid portion 12, as an example of the fragile portion, a groove-shaped slit 17 having an arcuate cross section intersects the projecting direction (X direction) of the protector 13. It is formed so as to extend in the Z direction. The portion where the slit 17 is formed on the wall surface 14a of the convex portion 14 has a thinner wall thickness than the portion without the slit 17, and thus functions in the same manner as the notch of the first embodiment. That is, the slit 17 has a function of easily breaking the mount portion 15 at the root portion with the lid portion 12 when the motor assembly 1 receives a collision load and a load of a predetermined value or more is applied to the lid portion 12. .. The specifications such as the shape and dimensions of the slit 17 and the position of the slit 17 depend on the strength of the lid portion 12 and the set load for breaking the mount portion 15, as in the case of the notch of the first embodiment. Can be set as appropriate
　以上のように、第２実施形態のスリット１７の構成によっても、第１実施形態と同様の効果を得ることができる。 As described above, the same effect as that of the first embodiment can be obtained by the configuration of the slit 17 of the second embodiment.
　本発明は、上記実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲において、種々の改良並びに設計の変更を行ってもよい。 The present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
　例えば、上記実施形態では、プロテクタ１３の方向（例えば、電動車両の前側）からモータ組立体１が衝突荷重を受ける場合を説明した。しかし、プロテクタ１３の方向と反対側（例えば、電動車両の後側）からモータ組立体１が衝突荷重を受けた場合においても、上記実施形態と同様の効果を得ることができる。 For example, in the above embodiment, the case where the motor assembly 1 receives a collision load from the direction of the protector 13 (for example, the front side of the electric vehicle) has been described. However, even when the motor assembly 1 receives a collision load from the side opposite to the direction of the protector 13 (for example, the rear side of the electric vehicle), the same effect as that of the above embodiment can be obtained.
　上記実施形態では、マウント部１５および脆弱部（切り欠き１６、スリット１７）を蓋部１２に設ける例について説明したが、マウント部１５および脆弱部の配置は、上記実施形態の構成に限定されるものではない。例えば、回路ハウジング３の本体部１１において、プロテクタ１３の形成位置に対してＸ方向の反対側の部位に、マウント部１５および脆弱部を配置するようにしてもよい。 In the above embodiment, an example in which the mount portion 15 and the fragile portion (notch 16, slit 17) are provided in the lid portion 12 has been described, but the arrangement of the mount portion 15 and the fragile portion is limited to the configuration of the above embodiment. It's not a thing. For example, in the main body 11 of the circuit housing 3, the mount portion 15 and the fragile portion may be arranged at a portion opposite to the forming position of the protector 13 in the X direction.
　加えて、今回開示された実施形態は、全ての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 In addition, the embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
１…モータ組立体、２…モータハウジング、３…回路ハウジング、４…減速機、５，７…構造部品、６…第１の固定部、８…第２の固定部、１１…本体部、１２…蓋部、１３…プロテクタ、１４…凸部、１４ａ…壁面、１５…マウント部、１５ａ…ボルト孔、１６…切り欠き、１７…スリット、Ｍ…モータ

  1 ... Motor assembly, 2 ... Motor housing, 3 ... Circuit housing, 4 ... Reducer, 5, 7 ... Structural parts, 6 ... First fixing part, 8 ... Second fixing part, 11 ... Main body part, 12 ... lid, 13 ... protector, 14 ... convex, 14a ... wall surface, 15 ... mount, 15a ... bolt hole, 16 ... notch, 17 ... slit, M ... motor

Claims (6)

  1. 　電動車両用のモータ組立体の取付構造であって、
    　モータを収容する第１ハウジングと、前記モータの反負荷側において前記第１ハウジングに取り付けられ、強電部を含む前記モータの制御部品を収容する第２ハウジングと、を有するモータ組立体と、
    　前記モータ組立体を前記モータの負荷側で電動車両の構造部品に固定する第１の固定部と、
    　前記モータの反負荷側で前記第２ハウジングを前記構造部品に固定する第２の固定部と、を備え、
    　前記第２ハウジングは、前記モータ組立体を前記構造部品に固定するためのマウント部と、車両衝突時に前記第２ハウジングが所定値以上の荷重を受けたときに破断して前記第２ハウジングから前記マウント部を離脱させる脆弱部と、を有する
    モータ組立体の取付構造。     It is a mounting structure of a motor assembly for an electric vehicle.
    A motor assembly having a first housing for accommodating a motor and a second housing attached to the first housing on the counterload side of the motor and accommodating a control component of the motor including a high electric power portion.
    A first fixing portion for fixing the motor assembly to a structural component of an electric vehicle on the load side of the motor,
    A second fixing portion for fixing the second housing to the structural component on the counterload side of the motor is provided.
    The second housing has a mounting portion for fixing the motor assembly to the structural component, and the second housing is broken when the second housing receives a load equal to or higher than a predetermined value at the time of a vehicle collision, and the second housing is separated from the second housing. A mounting structure of a motor assembly having a fragile part for detaching the mount part.
  2. 　前記第２ハウジングは、開口が形成された本体部と、前記本体部の開口を覆う蓋部と、を有し、
    　前記マウント部および前記脆弱部は、前記蓋部に設けられる
    請求項１に記載のモータ組立体の取付構造。     The second housing has a main body portion in which an opening is formed and a lid portion that covers the opening of the main body portion.
    The mounting structure for a motor assembly according to claim 1, wherein the mount portion and the fragile portion are provided on the lid portion.
  3. 　前記脆弱部は、前記第２ハウジングの壁面に設けられた切り欠きまたはスリットである
    請求項１または請求項２に記載のモータ組立体の取付構造。     The mounting structure of the motor assembly according to claim 1 or 2, wherein the fragile portion is a notch or a slit provided on the wall surface of the second housing.
  4. 　前記第２ハウジングは、前記モータの回転軸と交差する方向に突出して形成されるとともに車両衝突時の衝突荷重を受けるプロテクタを有する
    請求項３に記載のモータ組立体の取付構造。     The mounting structure for a motor assembly according to claim 3, wherein the second housing is formed so as to project in a direction intersecting the rotation axis of the motor and has a protector that receives a collision load at the time of a vehicle collision.
  5. 　前記切り欠きまたは前記スリットは、前記マウント部が設けられた前記壁面において、前記プロテクタの突出方向と交差する方向に延在するように形成される
    請求項４に記載のモータ組立体の取付構造。     The mounting structure for a motor assembly according to claim 4, wherein the notch or the slit is formed so as to extend in a direction intersecting the protruding direction of the protector on the wall surface provided with the mount portion.
  6. 　前記マウント部は、前記プロテクタよりも前記モータから離れた位置に配置される
    請求項４または請求項５に記載のモータ組立体の取付構造。

          The mounting structure for a motor assembly according to claim 4 or 5, wherein the mount portion is arranged at a position farther from the motor than the protector.
PCT/JP2020/038001 2019-12-25 2020-10-07 Motor-assembly mounting structure WO2021131225A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020559594A JP6870786B1 (en) 2019-12-25 2020-10-07 Mounting structure of motor assembly
CN202080085883.4A CN114829175B (en) 2019-12-25 2020-10-07 Mounting structure of motor assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-233778 2019-12-25
JP2019233778 2019-12-25

Publications (1)

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WO2021131225A1 true WO2021131225A1 (en) 2021-07-01

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069774A1 (en) * 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 Drive device for electric automobile
JP2016078713A (en) * 2014-10-20 2016-05-16 日産自動車株式会社 Vehicle high voltage electric device mounting structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069774A1 (en) * 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 Drive device for electric automobile
JP2016078713A (en) * 2014-10-20 2016-05-16 日産自動車株式会社 Vehicle high voltage electric device mounting structure

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