WO2021131225A1 - Structure de montage de groupe moteur - Google Patents

Structure de montage de groupe moteur 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
Authority
WO
WIPO (PCT)
Prior art keywords
motor
housing
motor assembly
mounting structure
load
Prior art date
Application number
PCT/JP2020/038001
Other languages
English (en)
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.)
Filing date
Publication date
Application filed by 株式会社明電舎 filed Critical 株式会社明電舎
Priority to CN202080085883.4A priority Critical patent/CN114829175B/zh
Priority to JP2020559594A priority patent/JP6870786B1/ja
Publication of WO2021131225A1 publication Critical patent/WO2021131225A1/fr

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Classifications

    • 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

La présente invention concerne une structure de montage de groupe moteur destinée un véhicule électrique et comprenant : un groupe moteur qui comporte un premier logement destiné à recevoir un moteur, et un second logement fixé au premier logement sur l'extrémité, opposée à la charge, du moteur, pour recevoir des composants de commande du moteur comprenant les éléments électriques ; une première partie d'ancrage pour ancrer le groupe moteur à une partie structurale du véhicule électrique sur l'extrémité de charge du moteur ; et une seconde partie d'ancrage pour ancrer le second logement à la partie structurale sur l'extrémité, opposée à la charge, du moteur. Le second logement présente une section de montage pour ancrer le groupe moteur à la partie structurale, et une section de rupture qui se rompt lorsque le second logement est soumis à une charge dépassant une valeur prédéfinie pendant une collision de véhicule, amenant ainsi la section de montage à se séparer du second logement.
PCT/JP2020/038001 2019-12-25 2020-10-07 Structure de montage de groupe moteur WO2021131225A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080085883.4A CN114829175B (zh) 2019-12-25 2020-10-07 马达组装体的安装结构
JP2020559594A JP6870786B1 (ja) 2019-12-25 2020-10-07 モータ組立体の取付構造

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
WO2021131225A1 true WO2021131225A1 (fr) 2021-07-01

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ID=76576050

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Application Number Title Priority Date Filing Date
PCT/JP2020/038001 WO2021131225A1 (fr) 2019-12-25 2020-10-07 Structure de montage de groupe moteur

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WO (1) WO2021131225A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069774A1 (fr) * 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 Dispositif de propulsion pour automobile électrique
JP2016078713A (ja) * 2014-10-20 2016-05-16 日産自動車株式会社 車両の強電機器搭載構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069774A1 (fr) * 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 Dispositif de propulsion pour automobile électrique
JP2016078713A (ja) * 2014-10-20 2016-05-16 日産自動車株式会社 車両の強電機器搭載構造

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