JP2008067546A - Cooling structure for capacitor and motor therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain heat and oscillation of a motor from being transmitted to a capacitor connected with an inverter integrally provided on an outer-periphery surface of a motor housing. <P>SOLUTION: A capacitor housing portion 300 is provided so as to be brought into contact with a housing 102 of a motor generator 100 at a contact surface 302A thereof and includes: a case body 302 for housing the capacitor 320; a support section 330 for supporting the capactor 320 at a position in which the capacitor 320 is not brought into contact with an inner-periphery surface of the case body 302; a housing section 340 provided between the capacitor 320 and the inner-periphery surface of the case body 302 to charge coolant for cooling the capacitor 320; and flat-plate shaped resistance plates 360 formed so as to be protruded from the respective surfaces of the capacitor 320 in the inner-periphery surface direction of the case body 302. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooling technology for a capacitor connected to an inverter integrally provided in a motor housing, and more particularly, to a technology for suppressing the transfer of heat and vibration of a motor to a capacitor.

  2. Description of the Related Art Conventionally, there is known an inverter-integrated motor that can be simplified and downsized by providing an inverter and a motor integrally. In recent years, an inverter-integrated motor is being mounted on a vehicle (such as an electric vehicle or a hybrid vehicle) that is driven by driving a motor with an alternating current converted by an inverter, and further downsizing of the inverter is demanded. Yes. In particular, in an inverter-integrated motor for a vehicle, downsizing and vibration resistance are important, and it is necessary to secure wiring intervals so that even if a vehicle collision occurs, the wiring position inside the inverter shifts and an electrical short circuit does not occur. In order to reduce the size of the inverter, it is necessary to wire with high density. Japanese Unexamined Patent Application Publication No. 2003-324903 (Patent Document 1) discloses a technique that enables downsizing while ensuring the impact resistance of an inverter-integrated motor.

  The vehicle-integrated inverter motor disclosed in this publication includes a motor unit housed in a housing, and an inverter circuit unit that is fixed to the housing and converts DC power into three-phase AC power and supplies power to the motor unit. Prepare. The inverter circuit unit includes a power switching element that constitutes each arm of the three-phase inverter circuit, a smoothing capacitor connected between a pair of DC input terminals of the three-phase inverter circuit, a control circuit that controls the power switching element, and switching A wiring portion for connecting the element, the smoothing capacitor, and the control circuit. The wiring portion is formed by integrating a large number of bus bars with the resin molded plate portion while ensuring insulation from each other, and is fixed to the outer peripheral surface of the peripheral wall of the housing through the resin molded plate portion, and the end of each bus bar is a resin molded plate And a bus bar built-in plate that protrudes from the part and is connected to each electrode terminal of the power switching element, a terminal of the smoothing capacitor, and a predetermined connection part of the control circuit. The bus bar built-in plate is positioned on the outer peripheral surface of the peripheral wall of the housing directly or through the heat radiating plate, and is positioned radially outside the power switching element while being overlapped with a predetermined gap in the radial direction. It extends in a substantially tangential direction.

According to the vehicle integrated inverter motor disclosed in this publication, the power switching element, the smoothing capacitor, and the control circuit, which are each component of the inverter unit, are wired and connected by the bus bar built-in plate as the wiring unit. As a result, the wiring between the above components constituting the inverter unit can be integrated into one member by the bus bar built-in plate, and the number of parts is reduced, the wiring work is simplified, and high-density, high-current wiring is realized. be able to. Furthermore, since it is possible to ignore the deformation of the bus bar due to vehicle vibration while ensuring sufficient electrical insulation between the bus bars, the interval between the bus bars can be greatly reduced.
JP 2003-324903 A

  By the way, in the inverter integrated motor for vehicles disclosed in Patent Document 1, a smoothing capacitor constituting a part of the inverter circuit unit is fixed to the outer peripheral surface of the peripheral wall of the motor housing. Therefore, heat and vibration from the motor are directly transmitted from the motor housing to the smoothing capacitor. As a result, the function of the smoothing capacitor for preventing sudden high voltage and high current to the inverter may be deteriorated.

  However, in the vehicle inverter integrated motor disclosed in Patent Document 1, no consideration is given to suppressing heat and vibration from the motor from being transmitted to the smoothing capacitor.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cooling structure for a capacitor connected to an inverter that is integrally provided on the outer peripheral surface of a motor housing. It is to provide a cooling structure capable of suppressing transmission of heat and vibration to a capacitor. Another object of the present invention is to provide a motor in which an inverter and a capacitor are integrally provided, and which can suppress the heat and vibration of the motor from being transmitted to the capacitor.

  The capacitor cooling structure according to the first aspect of the present invention is a capacitor cooling structure connected to an inverter provided integrally on the outer peripheral surface of the motor housing. This cooling structure has a contact surface with the outer peripheral surface of the motor housing, and is provided on the casing that houses the capacitor and the inner peripheral surface of the casing, and supports the capacitor at a position where the capacitor and the inner peripheral surface do not contact each other. A support part and an accommodating part for accommodating a cooling medium for cooling the condenser, which is constituted by a housing, are included.

  According to the first invention, heat and vibration generated by driving the motor are transmitted to the housing that houses the capacitor. The capacitor is supported at a position where it does not contact the inner peripheral surface of the casing. A cooling medium is accommodated in the accommodating portion constituted by the housing. That is, the cooling medium is filled between the capacitor and the inner peripheral surface of the housing. Therefore, it is possible to suppress the heat and vibration of the housing transmitted from the motor from being directly transmitted to the capacitor, and to actively absorb the heat energy and vibration energy of the housing with the cooling medium. As a result, a cooling structure for a capacitor connected to an inverter provided integrally on the outer peripheral surface of the motor housing, which can suppress the transfer of heat and vibration of the motor to the capacitor is provided. can do.

  In the capacitor cooling structure according to the second invention, in addition to the configuration of the first invention, the support portion is provided on an inner peripheral surface different from the contact surface.

  According to the second invention, the support portion is provided on the inner peripheral surface different from the contact surface. Thereby, compared with the case where a support part is provided in a contact surface, the heat of the housing | casing transmitted from the motor becomes difficult to be transmitted to a support part. Therefore, the amount of heat transferred from the housing to the capacitor via the support portion can be reduced.

  In the capacitor cooling structure according to the third invention, in addition to the structure of the first or second invention, the support portion is made of an elastic member.

  According to the third invention, when the housing vibrates by driving the motor, the support portion which is an elastic member expands and contracts by the force from the housing and the inertial force of the capacitor. Therefore, vibration energy transmitted from the housing to the capacitor via the support portion is absorbed as elastic energy by the support portion. Thereby, the vibration energy transmitted from the housing to the capacitor via the support portion can be reduced, and the vibration of the capacitor can be reduced.

  In the capacitor cooling structure according to the fourth aspect of the present invention, in addition to the configuration of any one of the first to third aspects, the accommodating portion accommodates the cooling oil.

  According to the fourth invention, the cooling oil accommodated in the accommodating portion absorbs more vibration energy of the housing because the viscosity is higher than that of gas or water. Therefore, vibration energy transmitted from the housing to the capacitor can be further reduced.

  In the capacitor cooling structure according to the fifth aspect of the invention, in addition to the configuration of the fourth aspect of the invention, the inverter is provided outside the casing. The capacitor is provided with an electrode wire connected to the inverter. The accommodating portion accommodates insulating oil.

  According to the fifth invention, the insulating oil is filled between the capacitor and the inner peripheral surface of the housing. Therefore, for example, the distance between the electrode wires can be made shorter than in the case where the gas is filled. Thereby, since the inductance of the capacitor can be reduced, the surge voltage generated in the inverter is suppressed. Therefore, the capacity of the capacitor can be reduced and the capacitor can be downsized. Thereby, the whole cooling structure of a capacitor can be reduced in size.

  In the capacitor cooling structure according to the sixth aspect of the invention, in addition to the configuration of the fourth aspect of the invention, the motor housing is filled with cooling oil for the motor. The housing is provided on the contact surface and includes a through portion that penetrates the housing and the motor housing. The accommodating portion accommodates the cooling oil for the motor that flows in through the penetrating portion.

  According to the sixth aspect of the invention, the condenser cooling medium and the motor cooling medium can be shared, and the cooling structure can be reduced in size.

  A capacitor cooling structure according to a seventh invention includes, in addition to the configuration of any one of the first to sixth inventions, a capacitor, a flat plate-like resistance member provided in the capacitor and protruding from the capacitor toward the inner peripheral surface. Further included.

  According to the seventh invention, when the capacitor vibrates due to the vibration of the motor, the resistance member receives a resistance force in the opposite direction to the vibration of the capacitor from the cooling medium. Thereby, more vibration energy of the capacitor is absorbed by the cooling medium. For this reason, the vibration of the capacitor due to the vibration of the motor can be attenuated more quickly.

  A capacitor cooling structure according to an eighth aspect of the present invention is a capacitor cooling structure connected to an inverter provided integrally on the outer peripheral surface of the motor housing. This cooling structure is provided with a contact surface between the capacitor and the outer peripheral surface of the motor housing, and is provided on the casing that houses the capacitor and the inner peripheral surface of the casing, and the capacitor is located at a position where the capacitor and the inner peripheral surface do not contact each other. And a housing portion that is configured by the housing and houses a cooling medium that cools the condenser.

  According to the eighth aspect, heat and vibration generated by driving the motor are transmitted to the housing that houses the capacitor. The capacitor is supported at a position where it does not contact the inner peripheral surface of the casing. A cooling medium is accommodated in the accommodating portion constituted by the housing. That is, the cooling medium is filled between the capacitor and the inner peripheral surface of the housing. Therefore, the heat and vibration of the casing transmitted from the motor can be prevented from being directly transmitted to the capacitor, and the thermal energy and vibration energy of the casing can be actively absorbed by the cooling medium. As a result, a cooling structure for a capacitor connected to an inverter provided integrally on the outer peripheral surface of the motor housing, which can suppress the transfer of heat and vibration of the motor to the capacitor is provided. can do.

  In the motor according to the ninth aspect, the inverter and the capacitor are integrally provided. The motor includes a motor, a motor housing that houses the motor, an inverter provided to contact the first outer peripheral surface of the motor housing, and a second outer peripheral surface of the motor housing. A housing, a capacitor housed in the housing and connected to the inverter, a support provided on the inner peripheral surface of the housing and supporting the capacitor at a position where the capacitor and the inner peripheral surface do not contact each other, and the housing And a housing portion that houses a cooling medium that cools the condenser.

  According to the ninth aspect, heat and vibration generated by driving the motor are transmitted to the housing that houses the capacitor. The capacitor is supported at a position where it does not contact the inner peripheral surface of the casing. A cooling medium is accommodated in the accommodating portion constituted by the housing. That is, the cooling medium is filled between the capacitor and the inner peripheral surface of the housing. Therefore, the heat and vibration of the casing transmitted from the motor can be prevented from being directly transmitted to the capacitor, and the thermal energy and vibration energy of the casing can be actively absorbed by the cooling medium. Accordingly, it is possible to provide a motor in which an inverter and a capacitor are integrally provided, and the motor and the motor can be prevented from transmitting heat and vibration to the capacitor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  With reference to FIG. 1, the structure of the vehicle which mounts the capacitor | condenser cooling structure which concerns on this Embodiment is demonstrated. In the present embodiment, the vehicle is described as an electric vehicle that travels only by the driving force from motor generator (MG) 100. However, the vehicle on which the condenser cooling structure according to the present invention is mounted is not limited to an electric vehicle. In addition, you may mount in a hybrid vehicle etc. Further, the motor generator 100 is not limited to driving a vehicle.

  This vehicle includes a motor generator 100, an inverter 200, a capacitor housing part 300, and a radiator 400.

  Motor generator 100 is a three-phase AC motor and a generator that generates electric power during regenerative braking of the vehicle. The rotation shaft of motor generator 100 is finally connected to a drive shaft (not shown) of the vehicle. The vehicle travels with the driving force from motor generator 100. When the motor generator 100 is driven as a motor or a generator, it generates heat and vibrates.

  The housing 102 of the motor generator 100 is filled with cooling oil that absorbs heat from the motor generator 100 and cools the motor generator 100. The heat absorbed by the cooling oil is released to the LLC flowing through the circulation path 410 in contact with the housing 102 or released to the outside air via the housing 102 to cool the cooling oil. This cooling oil also acts as a lubricating oil that reduces the rotational friction of the rotor by the oil film. In order to prevent a short circuit inside the motor generator 100, insulating oil is used as the cooling oil.

  The inverter 200 includes a plurality of IGBTs (Insulated Gate Bipolar Transistors), six diodes connected in parallel to each IGBT so that a current flows from the emitter side to the collector side of the IGBT, and ON / OFF of the gate of each IGBT. A control board on which an electronic component for controlling off (energization / cutoff) is mounted (not shown) is included. Inverter 200 causes motor generator 100 to function as a motor or a generator based on a control signal from an ECU (not shown). Inverter 200 is fixed to housing 102 and integrated with motor generator 100. The inverter 200 generates heat by turning on / off the gate of each IGBT.

  Capacitor housing unit 300 is connected to inverter 200 with electrode wires 310 (anode wire 310A, cathode wire 310B), and smoothes power from a battery (not shown) to supply to inverter 200, or power from inverter 200. The charge is temporarily accumulated for smoothing and supplying to the battery. Thereby, the occurrence of an inrush current to inverter 200 is prevented. Capacitor housing 300 is fixed to housing 102 so as to be adjacent to inverter 200, and is integrated with motor generator 100. The capacitor housing part 300 will be described in detail later.

  Radiator 400 is a radiator that releases heat of a coolant (hereinafter also referred to as LLC (Long Life Coolant)) that suppresses temperature rise of inverter 200 and capacitor housing 300. Circulation path 410 is formed along the outer peripheral surfaces of inverter 200 and capacitor housing part 300. The LLC circulates between the radiator 400 and the circulation path 410 by an electric water pump (not shown). The LLC cooled by the radiator 400 absorbs heat from the motor generator 100, the inverter 200, and the capacitor housing 300, and the heat is discharged by the radiator 400 to be cooled again.

  Furthermore, circulation path 410 is formed so as to contact the contact surface between motor generator 100 and inverter 200 and the contact surface between motor generator 100 and capacitor housing portion 300. Thereby, the amount of heat transmitted to inverter 200 and capacitor housing part 300 via housing 102 is reduced.

  A capacitor cooling structure according to the present embodiment will be described with reference to FIG. 2 is a cross-sectional view when the periphery of the capacitor housing portion 300 (the two-dot chain line portion in FIG. 1) is cut in a direction parallel to the paper surface in FIG.

  The capacitor cooling structure according to the present embodiment includes a capacitor 320, a housing 302 that houses the capacitor 320, a support portion 330 that supports the capacitor 320 inside the housing 302, and a housing that houses cooling oil. Part 340. Capacitor accommodating portion 300 includes anode wire 310 </ b> A, cathode wire 310 </ b> B, and filter 350 in addition to capacitor 320, casing 302, support portion 330, and accommodating portion 340 described above.

  The casing 302 is a substantially rectangular parallelepiped casing provided so as to come into contact with the housing 102 at the contact surface 302A. Note that the shape of the housing 302 is not limited to a substantially rectangular parallelepiped.

  The contact surface 302 </ b> A is provided with a through portion 304 that penetrates the inside and the outside of the housing 302. Note that a through hole is formed in the housing 102 in accordance with the through portion 304.

  The anode line 310 </ b> A and the cathode line 310 </ b> B are formed so as to be substantially parallel to each other, pass through the housing 302 from the capacitor 320, protrude outside the housing 302, and are connected to the inverter 200. The distance L between the anode line 310A and the cathode line 310B is secured to a predetermined value or more in order to prevent a short circuit.

  Capacitor 320 is formed in a substantially rectangular parallelepiped shape, temporarily accumulates charges as described above, smoothes input power, and prevents the occurrence of inrush current to inverter 200. The shape of the capacitor 320 is not limited to a substantially rectangular parallelepiped.

  The support part 330 is two elastic members that support the capacitor 320 at a position where the capacitor 320 and the inner peripheral surface of the housing 302 do not contact each other. One end of the support portion 330 is connected to the inner peripheral surface 302B opposite to the contact surface 302A, and the other end is connected to the capacitor 320. Note that the number of the support portions 330 is not limited to two. Moreover, the shape and material of the elastic member used for the support part 330 are not particularly limited.

  The accommodating portion 340 is a space that is provided between the capacitor 320 and the inner peripheral surface of the housing 302 and is filled with cooling oil that absorbs the heat of the capacitor 320 and cools the capacitor 320. The heat absorbed by the cooling oil is released to the LLC flowing through the circulation path 410 provided on the outer peripheral surface of the casing 302, and the cooling oil is cooled. This cooling oil is shared with the cooling oil filled in the housing 102 in order to reduce the size of the capacitor housing 300. That is, the cooling oil circulates inside the housing 102 and the inside of the housing 302 via the penetrating portion 304 by driving one electric oil pump (not shown).

  The cooling oil is not limited to being circulated by the electric oil pump. Further, the cooling oil for capacitor 320 and the cooling oil for motor generator 100 according to the present embodiment are not necessarily limited to being shared. That is, the cooling oil filled in the housing portion 340 may be independent of the cooling oil filled in the housing 102 without providing the through portion 304 on the contact surface 302A.

  The filter 350 is formed in the through-hole 304 and prevents impurities such as chips generated inside the housing 102 from being mixed into the cooling oil and flowing into the housing 302. As a result, a short circuit between the anode line 310A and the cathode line 310B is prevented.

  Capacitor 320 is provided with a flat resistor plate 360 formed so as to protrude from each surface toward the inner peripheral surface of housing 302. The resistance plate 360 is formed at a distance from the inner peripheral surface of the housing 302 so as not to touch the inner peripheral surface of the housing 302 even when the motor generator 100 is driven while the vehicle is running. In addition, the quantity and the formation location of the resistance plate 360 are not specifically limited. For example, only one sheet may be formed on a part of the surface of the capacitor 320, or a plurality of resistor plates 360 may be formed on the same surface.

  The operation of the capacitor cooling structure according to the present embodiment based on the above-described structure and flowchart will be described.

  With reference to FIG. 3, heat generated by driving motor generator 100 will be described.

  When the motor generator 100 is driven, heat is generated. Capacitor 320 is supported by support portion 330 at a position where it does not contact the inner peripheral surface of housing 302, and cooling oil is filled between capacitor 320 and contact surface 302A. Therefore, as shown in FIG. 3, the heat generated by the motor generator 100 is transmitted from the housing 102 to the cooling oil filled in the accommodating portion 340 via the contact surface 302A. Therefore, the heat of the housing 302 transmitted from the housing 102 is suppressed from being directly transmitted to the capacitor 320, and the heat energy of the housing 302 is positively absorbed by the cooling oil and transmitted to the capacitor 320. The amount of heat generated can be reduced.

  As shown in FIG. 3, a part of the heat absorbed by the cooling oil is released to the LLC flowing through the circulation path 410 provided on the outer peripheral surface of the housing 302, and the cooling oil is cooled. Therefore, the amount of heat transferred from the cooling oil to the capacitor 320 can be reduced, and the capacitor 320 can be actively cooled. In these respects, this cooling oil is also a cooling oil that cools the capacitor 320 and the housing 302.

  Furthermore, the support part 330 is connected to the inner peripheral surface 302B opposite to the contact surface 302A. Thereby, compared with the case where the support part 330 is provided in the contact surface 302A, the heat of the housing | casing 302 can be made difficult to be transmitted to the support part 330. FIG. Therefore, the amount of heat transferred from the housing 302 to the capacitor 320 via the support portion 330 can be reduced.

  In addition, since the cooling oil with which the accommodating part 340 is filled is an insulating oil, the distance L between the anode wire 310A and the cathode line 310B can be shortened, for example, compared with the case where the accommodating part 340 is filled with gas. Thereby, since the inductance of capacitor 320 can be reduced, the surge voltage generated in inverter 200 is suppressed. Therefore, the capacity of the capacitor 320 can be reduced and the capacitor 320 can be downsized. Thus, the housing 302 that accommodates the capacitor 320 can be reduced in size.

  With reference to FIG. 4, vibration generated by driving motor generator 100 will be described.

  As described above, the capacitor 320 is supported by the support portion 330 at a position where it does not contact the inner peripheral surface of the housing 302, and the cooling oil is filled between the capacitor 320 and the contact surface 302A. Therefore, as shown in FIG. 4, the vibration generated by motor generator 100 is transmitted from housing 102 to cooling oil via contact surface 302 </ b> A and also to support portion 330. Therefore, the vibration of housing 302 transmitted from motor generator 100 is suppressed from being directly transmitted to capacitor 320.

  A part of the vibration energy transmitted to the support part 330 is expanded and contracted by the force from the housing 302 and the inertial force of the capacitor 320 until the support part 330 is transmitted to the capacitor 320 as shown in FIG. In addition, the support portion 330 absorbs the elastic energy. Thereby, vibration energy transmitted from the housing 302 to the capacitor 320 via the support portion 330 can be reduced, and vibration of the capacitor 320 can be reduced.

  Further, even when vibration energy from the housing 302 (including elastic energy stored in the support portion 330) is transmitted to the capacitor 320, the capacitor 320 and the resistance plate 360 are in a direction opposite to the vibration from the cooling oil. Receive resistance. That is, part of the vibration energy transmitted to the capacitor 320 is absorbed by the cooling oil. Therefore, more vibration energy transmitted to the capacitor 320 can be absorbed by the cooling oil, and the vibration of the capacitor 320 can be attenuated more quickly.

  As described above, according to the capacitor cooling structure in accordance with the present embodiment, the capacitor is housed in the housing provided to be in contact with the motor generator housing. The capacitor is fixed at a position where it does not come into contact with the casing by the support section, and the accommodating section provided inside the casing is filled with cooling oil. Therefore, the heat and vibration of the motor can be prevented from being directly transmitted to the capacitor, and the heat and vibration that are actively absorbed by the cooling oil and transmitted to the capacitor can be reduced.

<First Modification>
In the first embodiment, the structure in which the cooling oil is cooled by the LLC circulating in the circulation path 410 has been described, but the cooling method of the cooling oil is not limited to this. For example, as shown in FIG. 5, even when the circulation path 410 and the radiator 400 are not provided, the heat transmitted from the motor generator 100 to the capacitor 320 and the cooling structure according to the first embodiment, Vibration can be reduced. In this modification, heat of the cooling oil is radiated from the housing 102 and the housing 302 to the outside.

<Second Modification>
In the first embodiment, the cooling oil is circulated between the housing 102 and the housing 302, and the cooling oil is cooled by the LLC circulating in the circulation path 410. The path and the cooling method are not limited to this. For example, as shown in FIG. 6, an oil cooler 600 and an oil cooler 600 are used instead of the radiator 400, the circulation path 410, the motor generator 100, and the capacitor housing unit 300 as compared with the vehicle according to the first embodiment. A circulation path 610 connected to the oil inlet of the oil cooler, a circulation path 620 connected to the oil outlet of the oil cooler 600, a motor generator 1100 to which the circulation path 610 is connected, and a capacitor housing to which the circulation path 620 is connected. Part 1300 may be included.

  Thereby, similarly to the cooling structure according to the first embodiment, heat and vibration transmitted from housing 1102 of motor generator 1100 to capacitor 320 can be reduced.

  Furthermore, the oil cooler 600 cools the cooling oil that has absorbed heat from the capacitor housing 1300, the motor generator 1100, and the inverter 200 by driving an electric oil pump (not shown). The cooled cooling oil flows into the housing 1302 of the capacitor housing portion 1300. Therefore, capacitor 320 can be actively cooled with the cooling oil.

  Further, since the cooling oil that has absorbed the heat of inverter 200 and motor generator 1100 is suppressed from flowing directly into capacitor housing portion 1300, the heat of inverter 200 and motor generator 1100 is transmitted to capacitor 320 via the cooling oil. It can be suppressed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows the structure of the vehicle by which the cooling structure of the capacitor | condenser which concerns on embodiment of this invention is mounted. It is sectional drawing which shows the cooling structure of the capacitor | condenser which concerns on embodiment of this invention. It is a figure which shows the flow of the heat | fever in the cooling structure of the capacitor | condenser which concerns on embodiment of this invention. It is a figure which shows the flow of the vibration in the cooling device of the capacitor | condenser which concerns on embodiment of this invention. It is a figure which shows the structure of the vehicle by which the cooling structure of the capacitor | condenser which concerns on the 1st modification of embodiment of this invention is mounted. It is a figure which shows the structure of the vehicle by which the cooling structure of the capacitor | condenser which concerns on the 2nd modification of embodiment of this invention is mounted.

Explanation of symbols

  100, 1100 Motor generator, 102, 1102 Housing, 200 Inverter, 300, 1300 Capacitor housing, 302 Case, 302A contact surface, 302B Opposite inner peripheral surface, 304 penetrating portion, 310 electrode wire, 310A anode wire, 310B Cathode ray, 320 condenser, 330 support part, 340 accommodating part, 350 filter, 360 resistance plate, 400 radiator, 410, 610, 620 circuit, 600 oil cooler.

Claims (9)

A cooling structure for a capacitor connected to an inverter provided integrally on the outer peripheral surface of the motor housing,
A housing having a contact surface with the outer peripheral surface of the motor housing, and housing the capacitor;
A support portion that is provided on an inner peripheral surface of the housing and supports the capacitor at a position where the capacitor and the inner peripheral surface do not contact;
A condenser cooling structure comprising: a housing portion configured to contain a cooling medium configured to cool the capacitor, the housing being configured by the housing.   The capacitor support structure according to claim 1, wherein the support portion is provided on an inner peripheral surface different from the contact surface.   The capacitor cooling structure according to claim 1, wherein the support portion is formed of an elastic member.   The said accommodating part is a cooling structure of the capacitor | condenser in any one of Claims 1-3 which accommodates cooling oil. The inverter is provided outside the housing, and the capacitor is provided with an electrode wire connected to the inverter,
The capacitor cooling structure according to claim 4, wherein the storage portion stores insulating oil. The motor housing is filled with cooling oil for the motor,
The housing includes a penetrating portion provided on the contact surface and penetrating through the housing and the motor housing.
5. The capacitor cooling structure according to claim 4, wherein the accommodating portion accommodates the cooling oil for the motor that flows in through the penetrating portion. The cooling structure is
The capacitor;
The capacitor cooling structure according to claim 1, further comprising: a flat plate-shaped resistance member provided on the capacitor and protruding from the capacitor toward the inner peripheral surface. A cooling structure for a capacitor connected to an inverter provided integrally on the outer peripheral surface of the motor housing,
The capacitor;
A housing having a contact surface with the outer peripheral surface of the motor housing, and housing the capacitor;
A support portion that is provided on an inner peripheral surface of the housing and supports the capacitor at a position where the capacitor and the inner peripheral surface do not contact;
A condenser cooling structure comprising: a housing portion configured to contain a cooling medium configured to cool the capacitor, the housing being configured by the housing. A motor in which an inverter and a capacitor are integrally provided,
The motor;
A motor housing that houses the motor;
The inverter provided in contact with the first outer peripheral surface of the motor housing;
A housing provided in contact with the second outer peripheral surface of the motor housing;
The capacitor housed in the housing and connected to the inverter;
A support portion that is provided on an inner peripheral surface of the housing and supports the capacitor at a position where the capacitor and the inner peripheral surface do not contact;
A motor including a housing configured to house the cooling medium configured to cool the capacitor, the housing being configured by the housing.

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