JP2003259600A - Cooling structure of on-vehicle electric system - Google Patents

Cooling structure of on-vehicle electric system

Info

Publication number
JP2003259600A
JP2003259600A JP2002060842A JP2002060842A JP2003259600A JP 2003259600 A JP2003259600 A JP 2003259600A JP 2002060842 A JP2002060842 A JP 2002060842A JP 2002060842 A JP2002060842 A JP 2002060842A JP 2003259600 A JP2003259600 A JP 2003259600A
Authority
JP
Japan
Prior art keywords
electric device
cooling
inverter
cooling air
vehicle
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2002060842A
Other languages
Japanese (ja)
Inventor
Nobuyuki Taki
Kimihisa Tsuji
伸幸 滝
公壽 辻
Original Assignee
Toyota Motor Corp
トヨタ自動車株式会社
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 Toyota Motor Corp, トヨタ自動車株式会社 filed Critical Toyota Motor Corp
Priority to JP2002060842A priority Critical patent/JP2003259600A/en
Publication of JP2003259600A publication Critical patent/JP2003259600A/en
Application status is Pending legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies for applications in electromobilty
    • Y02T10/641Electric machine technologies for applications in electromobilty characterised by aspects of the electric machine
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y02T10/7077Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors on board the vehicle
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility
    • Y02T10/7208Electric power conversion within the vehicle
    • Y02T10/7241DC to AC or AC to DC power conversion

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling structure of an on-vehicle electric system wherein an inverter and electrical apparatuses, such as an alternating-current generator- motor, controlled by the inverter can be cooled through a structure of small scale. <P>SOLUTION: The inverter 54 and a three-phase alternating-current generator- motor 50 are placed with an air-cooling heat sink 52 in-between. Further, measures are taken so that cooling air Y1 flowing through the air-cooling heat sink 52 is turned back through a duct 56 for cooling air and flows to a rotor 58 through a cooling fan 62. Furthermore, a heat insulator 51 for thermal insulation is placed between the three-phase alternating-current generator-motor 50 and the air-cooling heat sink 52. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle system for cooling an electric device such as an AC generator motor mounted on a hybrid vehicle and an inverter for controlling the electric device. The present invention relates to a cooling structure for an electric device. 2. Description of the Related Art A conventional cooling structure for a vehicle-mounted electric device will be described with reference to Japanese Patent Application Laid-Open No. 10-259721. In a hybrid vehicle, there are two power systems, for example, an internal combustion engine, an AC generator motor and an inverter, and the respective cooling target temperatures are different. Therefore, as shown in FIG.
The cooling system 110 on the internal combustion engine side has an internal combustion engine 111, a radiator 112, a water pump 113, and a cap 114, and the cooling system 120 on the electric motor side includes an inverter 121a as an electric device and an AC generator motor 12
1b, a radiator 122, and a water pump 123
And a cap 124. [0003] In this conventional cooling structure for a vehicle-mounted electric device, a cooling system 11 on the internal combustion engine side is used.
The cooling system 120 on the electrical device side is completely independent of the cooling system 120, and a separate water-cooling cooling system is required. [0004] On the other hand, as disclosed in Japanese Patent Application Laid-Open No. Hei 5-11218, a technique for cooling a rotating shaft by air with respect to a generator is known, but does not extend to cooling an inverter. Accordingly, an object of the present invention is to provide a cooling structure for a vehicle-mounted electric device which can cool an inverter and electric equipment such as an AC generator motor controlled by the inverter with a small-scale air cooling structure. And In order to solve the above-mentioned problems, a cooling structure for a vehicle-mounted electric device according to the present invention comprises a vehicle-mounted electric device for cooling an inverter and electric equipment controlled by the inverter. The cooling structure of the apparatus is characterized in that the inverter and the electric device are arranged adjacent to each other, and a cooling air supply means for circulating cooling air from the inverter to the electric device in order is provided. [0007] According to this configuration, the inverter having relatively low heat resistance is cooled first with the coldest cooling air, and the electrical equipment having heat resistance as compared with the inverter is cooled with the cooling air after cooling. Even in this case, both the inverter and the electric device can be effectively cooled. In addition, since the inverter and the electric device are arranged adjacent to each other, a small-scale cooling structure can be provided. [0008] When the electric device is a rotary electric device, the cooling air supply means circulates cooling air by a fan that rotates in conjunction with a rotating shaft of the rotary electric device. According to this configuration, since both the inverter and the electric device are cooled by the fan linked to the rotating shaft of the rotary electric device, a smaller cooling structure can be realized. [0010] The invention is characterized in that the FET, which is a component of the inverter, is arranged to be cooled upstream of the cooling air. [0011] According to this configuration, the FE particularly requiring cooling is used.
T can be cooled with the coldest cooling air,
The FET can be cooled effectively. Further, the cooling air flow passage is disposed between the inverter and the electric device, and a heat transfer suppressing means for suppressing heat generation from the electric device is provided between the flow passage and the electric device. Features. According to this configuration, when the inverter and the electric equipment are arranged close to each other via the flow path to achieve a small-scale cooling structure, heat from the electric equipment is transmitted to the inverter via the cooling air in the flow path. Although it is conceivable that the heat is transmitted, since the heat transfer suppressing means is interposed between the electric device and the flow passage, the heat transfer from the electric device to the inverter can be suppressed, and the cooling efficiency can be increased. . Further, in a case where the above-mentioned flow passage has a structure in which the cooling air flows between the inverter and the electric equipment and then returns to the flow passage of the electric equipment, the cooling air flows through the folded portion of the flow passage. It is characterized by having a guide means for guiding the cooling air to the flow passage of the electric device so that the distribution is uniform. According to this configuration, the distribution of the cooling air in the electric equipment can be made uniform, so that the cooling effect can be further improved. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An inverter of an AC motor generator according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a cooling structure of a vehicle-mounted electric device according to an embodiment of the present invention. FIG. 2 is similar to FIG.
FIG. 2 is a schematic perspective view showing an appearance of a cooling structure of the vehicle-mounted electric device shown in FIG. The cooling structure of the vehicle-mounted electric device shown in FIGS. 1 and 2 has an air-cooled heat sink for an inverter (hereinafter referred to as an air-cooled heat sink) on a three-phase AC generator motor 50 via a heat insulator 51 for heat insulation. The inverter 52 is mounted and fixed on the air-cooled heat sink 52, and the cooling air fixed to the three-phase AC generator motor 50 is provided at the end of the cooling air Y1 in the air-cooled heat sink 52. The air duct 56 is connected so that the cooling air Y1 passes therethrough. The three-phase AC generator motor 50 includes a rotor 58
And a cooling fan 62 attached to the rotating shaft 60 of the rotor 58, and a rotation sensor 66 attached to the opposite rotating shaft 60. The rotating shaft 60 extends further outside the cooling fan 62,
A pulley 64 is attached. That is, as the cooling fan 62 for cooling the rotor 58 by blowing air rotates, the cooling air Y1 flowing from the opening of the air-cooled heat sink 52 passes through the passage, and further passes through the cooling air duct 56. And flows to the rotor 58. The heat insulator 51 performs heat insulation so that the heat of the three-phase AC generator motor 50 is not conducted to the heat sink 52, and is made of a material having as low a thermal conductivity as possible. The inverter 54 has, for example, a circuit configuration shown in FIG. As shown in FIG. 3, an inverter 54 is provided between the three-phase AC generator motor 50 and the battery 12.
Is connected. The connection configuration of the inverter 54 will be described. First, the switching elements 20, 21 and 22 of the upper arm are connected between the three-phase AC motor generator 10 and the battery 12 via the current sensors 14, 15 and 16. Between them, switching elements 26, 27, 28 of the lower arm are connected via a capacitor 24, one end of which is grounded. The upper and lower arm switching elements 20 to
22 and 26 to 28 are MOS (Metal Oxide Semiconduct
or) type FET (Field Effect Transistor), and a body diode is formed between the source and the drain of this FET. Further, the switching element 20 of the upper arm
To 22 and the lower-arm switching element 26
Buffers 30 to 32, 34 to 36
Are connected to the gate drive circuits 40, 41, and 42 via. A gate drive power supply 44 and a control circuit 46 are connected to the gate drive circuits 40 to 42, and a Hall sensor 48 and current sensors 14 to 16 are connected to the control circuit 46. The control circuit 46 includes:
Control signals for powering, power generation switching, and excitation adjustment are input. In such a configuration, when the DC current from the battery 12 is converted into a three-phase AC current by the inverter and supplied to the three-phase AC motor generator 50 at the time of starting the vehicle, the three-phase AC motor generator 50 Operates as a motor to start the engine. On the other hand, after the start of the engine, the three-phase AC motor generator 50 operates as a generator,
The three-phase alternating current generated by this power generation is converted into a direct current by an inverter, and this direct current is
Is to be charged. The control circuit 46 performs powering, power generation switching, and power generation switching in accordance with input of control signals for powering, power generation switching, and excitation adjustment.
And control of excitation adjustment. This control turns on / off the switching elements 20 to 22 and 26 to 28 of the upper and lower arms by controlling the gate drive circuits 40 to 42.
Do it. When operating the three-phase AC motor generator 50 as a motor or a generator, the control circuit 46
Three-phase AC motor generator 50 detected by Hall sensor 48
The switching elements 20 to 22 and 26 to 28 of the upper and lower arms are turned ON / OFF via the gate drive circuits 40 to 42 in accordance with the rotation angle of the motor and the current values detected by the current sensors 14 to 16.
It is turned off. However, the switching elements 20 to 22, 26 of the upper and lower arms in the inverter 54 shown in FIG.
1 are denoted by reference numeral 54a, the capacitor 24 is denoted by reference numeral 54b, and other circuit elements are denoted by reference numeral 54c in FIG. Since the FET 54a generates the most heat and has a lower withstand voltage than other circuit components, as shown in FIG.
The air-cooled heat sink 5 at the uppermost stream where the cooling air Y1 is the coldest
The two passages are arranged in contact with or close to each other. In addition, components that generate high heat, such as the capacitor 54b, are also arranged at the upstream position. When the cooling fan 62 rotates together with the rotating shaft 60 of the rotor 58 in the cooling structure of the vehicle-mounted electric device having such a configuration, the cooling air Y1 is drawn in through the cooling air duct 56 and the air-cooled heat sink 52 as passages. Air is blown to the rotor 58. At this time, the FET 54a is cooled by the coldest cooling air Y1, and then components with high heat generation, such as the condenser 54b, are cooled. As described above, according to the cooling structure of the vehicle-mounted electric device of the present embodiment, the inverter 54 is simultaneously cooled by the blowing of the cooling fan 62 for cooling the rotor 58. Electric devices such as the inverter 54 and the three-phase AC generator motor 50 can be cooled without using a large-scale cooling system provided with a cooling system on the electric device side independent of a cooling system on the internal combustion engine side.
That is, it is possible to cool the inverter 54 and electric equipment such as the three-phase AC generator motor 50 controlled by the inverter 54 with a small-scale structure. As another embodiment, as shown in FIG. 4, a pulley 64 is attached to a rotation shaft 60 on the rotation sensor 66 side, so that the inside of the cooling air duct 56 in which the rotation shaft 60 is no longer inserted. , And a guide vane 66. The guide vane 66 has, for example, a curved plate shape, and is arranged and fixed in the cooling air duct 56 from near the connection with the air-cooled heat sink 52 to near the center of the cooling fan 62 on the suction side. If there is no such guide vane 66, much of the returned cooling air Y1 flows to the portion closest to the cooling fan 62. However, by providing the guide vanes 66, the cooling air Y1 that is turned back from the air-cooled heat sink 52 to the cooling air duct 56 flows to each passage partitioned by the guide vanes 66, and flows almost uniformly to the suction area of the cooling fan 62. Will be. Therefore, the rotor 5 is connected via the cooling fan 62.
The cooling air Y1 blown to 8 flows almost uniformly over the entire surface of the rotor 58, so that the rotor 58 can be efficiently cooled. Note that a plurality of guide vanes 66 may be provided. According to the present invention, the cooling structure of the vehicle-mounted electric device is as follows.
In a cooling structure of an in-vehicle electric device for cooling an inverter and an electric device controlled by the inverter, the inverter and the electric device are arranged adjacent to each other, and cooling air is supplied from the inverter to the electric device in order from the inverter by cooling air supply means. I did it. As a result, the inverter is cooled first with the coldest cooling air, and the cooling air after cooling cools electrical equipment that generates more heat than the inverter,
Even with air cooling, both the inverter and the electric equipment can be effectively cooled. In addition, since the inverter and the electric device are arranged adjacent to each other, a small-scale cooling structure can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a cooling structure of a vehicle-mounted electric device according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing an external appearance of a cooling structure of the on-vehicle electric device. FIG. 3 is a diagram illustrating an example of a circuit configuration of an inverter in the cooling structure of the on-vehicle electric device. FIG. 4 is a diagram showing a cooling structure of a vehicle-mounted electric device according to another embodiment. FIG. 5 is a diagram showing a cooling structure of a conventional on-vehicle electric device. [Description of Signs] 50: three-phase AC generator motor, 51: heat insulator, 52: air-cooled heat sink, 54: inverter, 54
a ... FET, 58 ... Rotor, 62 ... Cooling fan, 66 ...
Guide vane, Y1 ... cooling air

   ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 3D038 AA09 AB01 AC00                 5H115 PA11 PC06 PG04 PI22 PU21                       PV09 PV24 QA10 UI28 UI36                 5H609 BB05 BB13 BB18 PP02 PP07                       PP16 QQ02 QQ12 QQ18 RR03                       RR32 RR33 RR42 RR61 RR71                 5H611 AA09 BB02 BB08 TT02 UA04

Claims (1)

  1. Claims: 1. A cooling structure for a vehicle-mounted electric device for cooling an inverter and an electric device controlled by the inverter, wherein the inverter and the electric device are arranged adjacent to each other, and A cooling structure for a vehicle-mounted electric device, comprising: cooling air supply means for flowing cooling air in the order of electric devices. 2. When the electric device is a rotating electric device, the cooling air supply means circulates the cooling air by a fan that rotates in conjunction with a rotating shaft of the rotating electric device. A cooling structure for a vehicle-mounted electric device according to claim 1. 3. An FET which is a component of the inverter.
    3. The cooling structure for an in-vehicle electric device according to claim 1, wherein the cooling structure is arranged so as to be cooled upstream of the cooling air. 4. A heat transfer suppressing means for disposing a flow passage of the cooling air between the inverter and the electric device and for suppressing heat generation from the electric device between the flow passage and the electric device. The cooling structure for a vehicle-mounted electric device according to any one of claims 1 to 3, wherein the cooling structure is provided. 5. In a case where the flow passage has a structure in which the cooling air flows between the inverter and the electric device and then returns to the flow passage of the electric device, the return portion of the flow passage includes: The vehicle-mounted electric device according to any one of claims 1 to 4, further comprising guide means for guiding the cooling air to a flow passage of the electric device so that a distribution of the cooling air is uniform. Cooling structure.
JP2002060842A 2002-03-06 2002-03-06 Cooling structure of on-vehicle electric system Pending JP2003259600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002060842A JP2003259600A (en) 2002-03-06 2002-03-06 Cooling structure of on-vehicle electric system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002060842A JP2003259600A (en) 2002-03-06 2002-03-06 Cooling structure of on-vehicle electric system

Publications (1)

Publication Number Publication Date
JP2003259600A true JP2003259600A (en) 2003-09-12

Family

ID=28670049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002060842A Pending JP2003259600A (en) 2002-03-06 2002-03-06 Cooling structure of on-vehicle electric system

Country Status (1)

Country Link
JP (1) JP2003259600A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008897A1 (en) * 2004-07-15 2006-01-26 Mitsubishi Denki Kabushiki Kaisha Rotating electric machine integral with control device
US7411789B2 (en) 2005-07-04 2008-08-12 Nec Viewtechnology, Ltd. Once-through forced air-cooled heat sink for a projection display apparatus
EP2086093A1 (en) * 2007-12-06 2009-08-05 Hitachi Ltd. Rotating electrical machine
EP2178192A3 (en) * 2008-10-14 2010-06-23 KSB Aktiengesellschaft Device which can be attached to an electric motor
JP2010213447A (en) * 2009-03-10 2010-09-24 Nissan Motor Co Ltd Mechano-electric driver
EP2573914A2 (en) 2011-09-26 2013-03-27 Kabushiki Kaisha Toshiba Electric motor
WO2014192424A1 (en) * 2013-05-30 2014-12-04 株式会社豊田自動織機 Hybrid vehicle drive device
JP2015091190A (en) * 2013-11-06 2015-05-11 株式会社デンソー Mechatronic engine starter
JP2015142443A (en) * 2014-01-29 2015-08-03 株式会社やまびこ Work machine
JP2016111909A (en) * 2014-11-28 2016-06-20 株式会社ミツバ Arrangement structure of rotary electric machine unit and rotary electric machine unit
JP2016220385A (en) * 2015-05-20 2016-12-22 日産自動車株式会社 On-vehicle drive unit
GB2565998A (en) * 2017-05-08 2019-03-06 Jaguar Land Rover Ltd Heat retention apparatus and method
US10251319B2 (en) 2017-02-23 2019-04-02 Lsis Co., Ltd. Heat radiation apparatus using modular cooling apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008897A1 (en) * 2004-07-15 2006-01-26 Mitsubishi Denki Kabushiki Kaisha Rotating electric machine integral with control device
US7358699B2 (en) 2004-07-15 2008-04-15 Mitsubishi Denki Kabushiki Kaisha Rotating electric machine with built-in control device
US7411789B2 (en) 2005-07-04 2008-08-12 Nec Viewtechnology, Ltd. Once-through forced air-cooled heat sink for a projection display apparatus
EP2086093A1 (en) * 2007-12-06 2009-08-05 Hitachi Ltd. Rotating electrical machine
EP2178192A3 (en) * 2008-10-14 2010-06-23 KSB Aktiengesellschaft Device which can be attached to an electric motor
JP2010213447A (en) * 2009-03-10 2010-09-24 Nissan Motor Co Ltd Mechano-electric driver
EP2573914A2 (en) 2011-09-26 2013-03-27 Kabushiki Kaisha Toshiba Electric motor
JP2013074646A (en) * 2011-09-26 2013-04-22 Toshiba Corp Motor integrated with controller
WO2014192424A1 (en) * 2013-05-30 2014-12-04 株式会社豊田自動織機 Hybrid vehicle drive device
JP2015091190A (en) * 2013-11-06 2015-05-11 株式会社デンソー Mechatronic engine starter
JP2015142443A (en) * 2014-01-29 2015-08-03 株式会社やまびこ Work machine
JP2016111909A (en) * 2014-11-28 2016-06-20 株式会社ミツバ Arrangement structure of rotary electric machine unit and rotary electric machine unit
JP2016220385A (en) * 2015-05-20 2016-12-22 日産自動車株式会社 On-vehicle drive unit
US10251319B2 (en) 2017-02-23 2019-04-02 Lsis Co., Ltd. Heat radiation apparatus using modular cooling apparatus
GB2565998A (en) * 2017-05-08 2019-03-06 Jaguar Land Rover Ltd Heat retention apparatus and method

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