JP2001250735A - Attaching structure of capacitor in vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple attaching structure of a capacitor in a vehicle, which can improve the space factor in an electronic equipment housing case and can cool the capacitor. SOLUTION: In this attaching structure, bosses 5 and a pair of frames 6 and 6 are welded to the part, to which a vibration-proof section 3 is welded, of the external surface of a case member 2 constituting the capacitor 2. Peripheral circuits 8 are mounted on a flat support plate 7 though which a plurality of attaching holes 7a having the sizes corresponding to tapped holes 6a are formed. The support plate 7 can be attached to the attaching frames 6 and 6 with bolts which are not shown in the Fig.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a capacitor for a vehicle, which is disposed in an electric equipment storage case of an electric vehicle.

[0002]

2. Description of the Related Art As shown in FIG. 5, an electric equipment storage case 1 is usually arranged under the floor of an electric car, and electric power is supplied to a drive motor in the electric equipment storage case 1. And various electric equipment such as a reactor, a transformer, and a capacitor 2 are provided. Examples of the capacitor 2 include a disconnection protection capacitor (for supplying power during passage through a section where power supply from a substation is cut off), a smoothing capacitor, and the like. Applicable.

FIG. 6 is a perspective view showing an outer shape of a capacitor 2 provided in the electric equipment storage case 1 of FIG. The capacitor 2 has a case member 2a, and the case member 2a is filled with insulating oil or the like. A pair of terminals 2b protrude from the upper case member 2a,
A pair of steady rest portions 3 as fixing members are welded to the outer surface of the case member 2a on the side surface. A bottom fixing plate 4 also serving as a fixing member is welded to the bottom surface of the case member 2a. Then, the steady rest 3 and the bottom fixing plate 4 are fastened to the mounting member on the side of the electric equipment storage case 1 by bolt members, and the capacitor 2 is firmly fixed to the electric equipment storage case 1. In addition,
Since the case member 2a tends to expand in the direction indicated by the arrow as the ambient temperature increases, the fastening portion of the bolt member is on the side surface where the influence of the expansion is small.
Further, the fixing position, the fixing direction, the fixing posture, and the like of the capacitor 2 in the electric device storage case 1 are various depending on the type of the electric vehicle.

[0004]

By the way, several chambers are formed in the electric equipment storage case 1, the capacitor 2 is disposed in the capacitor storage chamber, and the inverter device is disposed in the inverter storage chamber. Has been established. In this capacitor storage chamber, not only the capacitor 2 but also its peripheral circuit components are mounted on a frame member or a boss member provided in the capacitor storage room. Usually, a position where maintenance work can be easily performed is used.

However, arranging the peripheral circuit parts so that the maintenance work can be easily performed, on the other hand, deteriorates the space factor, and increases the wiring length and complicates the wiring state. In addition, the internal structure of the electric equipment storage case 1 is complicated, and it is difficult to reduce the size of the electric equipment storage case 1 to a certain size or more.

In general, inverter devices, reactors, transformers, and the like are considered to be heat-generating devices that generate relatively large amounts of heat. Therefore, some of these storage rooms are provided with holes for releasing heat. In general, some consideration has been given to cooling, for example. However, condensers are not considered to be equipment that generates a large amount of heat, so little consideration has been given to cooling so far, and they are placed in a substantially closed storage room with almost no air outlet. It had been. Therefore, the capacitor 2
Of the capacitor 2 is accelerated, and the capacity of the capacitor 2 is greatly reduced in a short time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an improved space factor in an electric equipment storage case, and has a simple structure for mounting a condenser for a vehicle capable of cooling the condenser. It is intended to provide structure.

[0008]

According to a first aspect of the present invention, there is provided an electric device storage case in which a vehicle capacitor is provided together with other electric devices in an electric device storage case. A fixing member is fixed to an outer surface of a case member forming the capacitor for use, and the fixing member is fixed to the electric device storage case. In the mounting structure for a vehicle capacitor, the outer surface to which the fixing member is fixed is attached. And a support plate on which peripheral circuit components of the vehicle capacitor are mounted.

According to a second aspect of the present invention, in the first aspect of the present invention, an outer surface of the case member to which the fixing member is fixed is an outer surface on a side where the amount of expansion due to a rise in ambient temperature is small. It is characterized by the following.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the fixing member and the mounting member are both integrally formed.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the vehicle capacitor includes a heat-generating device in which a heat-generating device is housed and a hole for heat release is formed. The storage chamber is housed in a capacitor storage chamber defined by a partition wall, and cooling fins are laid on a case member surface adjacent to a surface to which the fixing member and the mounting member are fixed, and the partition is provided with the cooling fin. An opening having a slightly larger area than the area where the cooling fins are laid is formed in the wall, and the cooling fins are located in the heat-generating equipment storage room through the openings.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. However, the same components as those shown in FIGS. 5 and 6 are denoted by the same reference numerals, and redundant description will be omitted. FIG. 1 is a perspective view showing an external configuration of the first embodiment of the present invention. In this figure, capacitor 2
A mounting boss 5 as a mounting member and a pair of mounting frames 6 and 6 are welded to the outer surface of the case member 2a forming the base member 2a where the steady rest 3 is welded.

As shown in the figure, the mounting frame 6 has an end opposite to the welded portion bent so that its cross section is substantially L-shaped. Hole 6a
Are formed. On the other hand, a peripheral circuit component 8 is mounted on the flat support plate 7, and the support plate 7 is formed with a mounting hole 7a having a size corresponding to the plurality of screw holes 6a. The support plate 7 can be attached to the pair of attachment frames 6 and 6 by bolt members (not shown). The support plate 7 is attached so as to be parallel to the front outer surface of the case member 2a. Further, another peripheral circuit component or an electric device (not shown) is attached to the mounting boss 5.

In the above configuration, since the support plate 7 on which the peripheral circuit components 8 are mounted is mounted on the capacitor 2 itself via the mounting frame 6, both the capacitor 2 and the peripheral circuit components 8 are installed in a narrow space. Can be arranged, resulting in an improved space factor. That is, in the related art, the peripheral circuit component 8 is
The wiring length becomes long because of being mounted on another mounting member provided in the inside, and the capacitor 2 must be taken out of the electrical equipment storage case 1 after removing this wiring material at the time of maintenance. Sometimes extra work was required.

On the other hand, in the configuration of FIG. 1, the peripheral circuit component 8 can be located at a close distance to the terminal 2b, so that the wiring length can be shortened and the wiring state can be simplified. Furthermore, since the mounting member provided in the conventional electric device storage case 1 can be eliminated, the internal structure of the electric device storage case 1 can be simplified. Also, during maintenance, the capacitor 2 can be easily taken out of the electric equipment storage case 1 with the support plate 7 on which the peripheral circuit components 8 are mounted, so that repair work and the like can be easily performed. Becomes

FIG. 2 is a perspective view showing an external configuration of a second embodiment of the present invention. In the first embodiment shown in FIG. 1, the steady rest portion 3 as the fixing member and the mounting frame 6 as the mounting member are separately welded to the side surface of the case member 2a as separate members. However, in the configuration of FIG. 2, these are integrally formed. That is, a pair of mounting frames 9, 9 are welded to both side surfaces of the case member 2a, and a support plate 10 on which the peripheral circuit component 8 is mounted is mounted on the pair of mounting frames 9, 9. I have.

The mounting frame 9 has a fixing portion 9a that functions similarly to the steady rest receiving portion 3 in FIG. 1, and a mounting portion 9b that functions similarly to the mounting frame 6 in FIG. The fixing portion 9a has a hole 9c, and the mounting portion 9b has a screw hole 9d.

On the other hand, the support plate 10 is formed with a bent portion adjacent to a plane portion on which the peripheral circuit component 8 is mounted, and a hole 10a corresponding to the hole 9c is provided in a bent portion of the bent portion. Have been. Further, a hole 10b corresponding to the screw hole 9d is provided in the flat surface portion of 10. The core member 8A, which is mounted on the support plate 10 and through which the wiring member 8B is inserted, is one of the peripheral circuit components, and is for removing signal noise passing through the wiring member 8B.

According to the configuration of the second embodiment, similarly to the configuration of the first embodiment, the wiring length can be reduced and the wiring state can be simplified. The internal structure of the storage case 1 can be simplified. Then, maintenance work and the like can be easily performed. Note that the first embodiment has a configuration in which the mounting boss 5 and the mounting frame 6 are mounted in addition to the steady rest receiving portion 3 which has been conventionally mounted. It is a structure applicable. On the other hand, the second embodiment, as is apparent from the configuration including the mounting frame 9 in which both the steady rest receiving portion 3 and the mounting frame 6 are integrated,
This is a structure suitable for newly manufacturing the capacitor 2.

FIG. 3 is a perspective view showing an external configuration of a third embodiment of the present invention. In the third embodiment, a mounting plate 11 provided with a bolt hole 11a for fixing to a mounting member on the side of the electric equipment storage case 1, and a mounting plate 12
Are welded to the side surface of the capacitor 2. And
A support plate 13 on which the peripheral circuit component 8 is mounted is mounted on the mounting plates 11 and 12. Further, a plurality of cooling fins 14 are welded to the outer surface of the case member 2c opposite to the outer surface of the case member of the capacitor 2 on which the support plate 13 is disposed. The cooling fins 14 are formed of aluminum having good heat conductivity. Therefore, unlike the other case members, the case member 2c to which the cooling fins 14 are welded is formed of aluminum.

FIG. 4 is a cross-sectional view showing an arrangement of the capacitor 2 shown in FIG. As shown in this figure, a capacitor storage chamber 1a and an inverter storage chamber 1b are formed in the electrical equipment storage case 1. A capacitor 2 on which a support plate 13 on which peripheral circuit components 8 are mounted is mounted via mounting plates 11 and 12
Are supported on a support base 15 in the capacitor storage chamber 1a. On the other hand, an inverter device 16 is installed in the inverter storage room 1b. This inverter device 16
Is originally considered to be a heat-generating device that generates considerable heat, so that a large number of holes 1c are formed in the upper and lower portions of the inverter storage room 1b. The structure is such that a rise in temperature is suppressed.

The capacitor storage room 1a and the inverter storage room 1b are defined by a partition wall 1d. In the third embodiment, an opening 1e is formed in the partition wall 1d, and the opening 1e is formed in the partition wall 1d. The area is slightly larger than the laying area of the cooling fins 14 on the case member 2c.
The cooling fins 14 of the condenser 2 pass through the opening 1e and protrude from the condenser storage chamber 1a to the inverter storage chamber 1b. Therefore, the mounting plate 12
Most of the heat generated from the inverter device 16 is released to the outside through the hole 1c together with the heat generated from the inverter device 16. An opening 1f is formed on the front side of the capacitor storage chamber 1a, and the opening 1f is closed by a lid member 17. Therefore, at the time of maintenance, by removing the lid member 17, the operator can easily perform maintenance work. If necessary, the capacitor 2 can be removed from the support base 15 and taken out of the capacitor storage chamber 1a together with the capacitor 2 and the peripheral circuit components 8 on the support plate 13 attached thereto.

According to the configuration of the third embodiment, similarly to the first and second embodiments, the wiring length can be shortened, the wiring state can be simplified, and the internal structure of the electric equipment storage case 1 can be reduced. Effects such as simplification and facilitation of maintenance work can be obtained. Further, in addition to this, the rise in the ambient temperature of the capacitor 2 can be suppressed, and
This can suppress an increase in the rate of deterioration of the performance.

[0024]

As described above, according to the present invention, the mounting member is fixed to the outer surface to which the fixing member is fixed, and the supporting plate on which the peripheral circuit component of the vehicle capacitor is mounted is mounted on the mounting member. With the attached structure, it is possible to shorten the wiring length, simplify the wiring state, simplify the internal structure of the electrical device storage case, and facilitate the maintenance work.

In addition, a cooling fin is provided on the vehicle condenser itself, and an opening is formed in a partition wall between the capacitor storage chamber and the heat-generating equipment storage chamber. The cooling fin is inserted into the heat-generating equipment storage chamber through this opening. By locating the capacitor, it is possible to cool the condenser for a vehicle and to suppress an increase in the speed of deterioration of the performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external configuration of a first embodiment of the present invention.

FIG. 2 is a perspective view showing an external configuration of a second embodiment of the present invention.

FIG. 3 is a perspective view showing an external configuration of a third embodiment of the present invention.

FIG. 4 is a sectional view showing an arrangement state of the capacitor 2 shown in FIG. 3 in the electric device housing case 1.

FIG. 5 is an explanatory view showing a place where the electric device storage case 1 is arranged.

FIG. 6 is a perspective view showing an outer shape of a conventional mounting structure for a capacitor 2 disposed in the electric device storage case 1 of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Electric device storage case 1a Capacitor storage room 1b Inverter storage room 1c Heat release hole 1d Partition wall 1e Opening 1f Opening 2 Capacitor 2a Case member 2b Terminal 3 Steady stopper receiving member (fixing member) 4 Bottom fixing plate 4 ( Fixing member) 5 Mounting boss 5 (Mounting member) 6 Mounting frame 7 Support plate 7a Mounting hole 8 Peripheral circuit parts 8A Core member 8B Wiring material 9 Mounting frame 9a Fixing portion 9b Mounting portion 9c Hole 9d Screw hole 10 Support plate 10a Hole 10b hole 11a bolt hole 12 mounting plate 13 support plate 14 cooling fin 15 support base 16 inverter device (heat generating device) 17 lid member

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takehisa Iida 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in the Fuchu Plant of Toshiba Corporation 4E353 AA06 AA16 AA18 AA24 BB02 BB04 BB05 BB13 CC01 CC04 CC12 CC33 DD01 DR08 DR17 DR27 DR49 DR57 GG20 GG21 GG30 5H115 PC02 PG01 PI01 PI29 PU08 PV09 UI33 UI36 UI38

Claims (4)

[Claims] 1. A vehicle capacitor is provided in an electric device storage case together with other electric devices, and a fixing member is fixed to an outer surface of a case member forming the vehicle capacitor. In the mounting structure for a vehicle capacitor fixed to the electric device storage case, a mounting member is fixed to an outer surface to which the fixing member is fixed,
A mounting structure for a vehicle capacitor, wherein a support plate on which peripheral circuit components of the vehicle capacitor are mounted is mounted on the mounting member. 2. The vehicle capacitor according to claim 1, wherein an outer surface of the case member to which the fixing member is fixed is an outer surface on a side where an amount of expansion caused by a rise in ambient temperature is small. Mounting structure. 3. The mounting structure for a vehicle capacitor according to claim 1, wherein the fixing member and the mounting member are formed integrally with each other. 4. The vehicle capacitor is housed in a capacitor housing room which houses a heat-generating device and which is defined by a partition wall from a heat-generating device housing room in which a hole for heat release is formed. A cooling fin is laid on a case member surface adjacent to a surface to which the fixing member and the mounting member are fixed, and an opening having a slightly larger area than a cooling fin laying region is formed on the partition wall, The mounting structure for a vehicle capacitor according to any one of claims 1 to 3, wherein a cooling fin is located in the heat-generating equipment storage room through the opening.