JPH08238950A - Semiconductor control device for vehicle - Google Patents

Abstract

PURPOSE: To reduce the inspection and maintenance time of internal equipment of a semiconductor control device for a vehicle and improve work efficiency and safety for a worker. CONSTITUTION: As the internal constitution of semiconductor control devices 21 fitted to a body, contactless control devices 3 and alternating current contactors 4 high in the frequency of periodic inspection, maintenance, and the like are arranged at both side faces of a vehicle, with a sub-maintenance space 12 existing in the proceeding direction of the vehicle at the center part, and formed into such structure as to be accessible in the direction of arrow marks 16 from the side faces of the vehicle. Converter cooling units 1 and inverter cooling units 2 in frequent need of coping with failures are also arranged at both side faces of the vehicle and formed into such structure as to be pulled out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle semiconductor control device having a structure in which internal equipment is arranged in consideration of operability during maintenance and inspection.

[0002]

2. Description of the Related Art As a typical circuit constituting a vehicle semiconductor control device, as shown in FIG. 9, single-phase AC power collected by a pantograph 24 is supplied to a primary winding of a main transformer 25. The power induced in the two windings on the secondary side is 2
The converter cooling units 1 are supplied to each of the converter cooling units 1 to convert the DC power, and the DC power is input to the two inverter cooling units 2a and 2b to convert to three-phase AC power, which is then converted into an AC main motor (induction motor) 23. Supply to the electric motor 23
Drive control.

Reference numeral 4 in the figure denotes an AC contactor provided in the secondary side circuit of the main transformer 25. The vehicle semiconductor control device 21 is attached to the lower surface of the vehicle body 22 via the connecting component 30 as shown in FIG.

Conventionally, as an internal configuration of the semiconductor control device 21, as shown in FIGS. 10 (a) and 10 (b), an AC contactor 4 and a filter capacitor 5 are provided on one side of the front and rear ends in the vehicle traveling direction 27. The contactless control device 3, the control circuit component 6a, and the power supply component 6b are arranged in parallel in the vehicle width direction 28 on the other side of the front and rear ends.

Two converter cooling units 1 and two inverter cooling units 2a and 2b are arranged side by side in the vehicle traveling direction between both ends, and an electric blower is provided on one side of the vehicle width direction 28. 8 are arranged.

In the figure, reference numeral 26 is a connecting conductor for connecting each part in the apparatus, and 29 is another apparatus which is connected to the semiconductor control apparatus 21 and is attached via a connecting part 30. Also, 1
2a indicates the flow of cooling air, and 16 indicates the access direction of important parts for inspection.

Here, the converter cooling unit 1 and the inverter cooling units 2a and 2b are composed of switching elements, and the non-contact control device 3 controls the switching elements of these units. Further, the electric blower 8 efficiently exhausts the heat generated from the switching elements and the like constituting the converter cooling unit 1 and the inverter cooling units 2a and 2b to the atmosphere by forced cooling.

By the way, in the semiconductor control device for a vehicle, it is more or less always necessary to take out the internal device from the device or replace it at the time of regular inspection, maintenance or failure. In this case, the frequency of maintenance and inspection is high in the non-contact control device 3, the AC contactor 4, and the control parts, and the frequency of failure is high in the converter cooling unit 1 and the inverter cooling unit that house the switching elements. 2a,
2b.

[0009]

However, in the semiconductor control device for a vehicle having the above-mentioned structure, when the contactless control device 3 and the AC contactor 4 are to be maintained and inspected, the arrow 1 shown in FIG.
6 is accessed from the front / rear surface side in the vehicle traveling direction, but in an actual vehicle, another device 29 is close to the front / rear surface, and on the vehicle side surface, the device 29 and the semiconductor control device 21 are connected by the connecting part 30. Because it is connected, maintenance from the front and back,
In order to inspect, it is necessary to remove these connecting parts 30 and the like, and since the connecting part 30 is used not only on the vehicle side surface but also on the lower surface of the device, it is necessary to remove them at the same time.

Therefore, accessing the inspection equipment requires a lot of incidental work, which requires a huge amount of time, and this also requires a lot of work time to restore the original state after the inspection.

On the other hand, due to the failure of the converter cooling unit 1 and the inverter cooling units 2a and 2b, in order to access them, the lower surface plate of the semiconductor control device 21 is removed as shown in FIGS.
It is taken out by placing it on the work lifter 18 installed in the space portion existing therebetween.

However, when the converter cooling unit 1 and the inverter cooling units 2a and 2b are accessed as described above, as shown in FIGS. 13 and 14, the worker 20 sneaks into the rail inner foundation 17 to perform the work in a middle waist posture. Since it must be, it is hard to say that it is safe in terms of posture.

Further, as shown in FIG. 12, since the converter cooling unit 1 and the inverter cooling unit 2 are arranged on the side surface of the vehicle, it is necessary to remove a part of the connecting conductor 26 in the apparatus and then insert the connecting conductor 26 between the rails in the pit. First, the cooling units 1 and 2 are moved to the center side of the apparatus, and then lowered into the pit and removed.

Therefore, in order to access the converter cooling unit 1 and the inverter cooling units 2a and 2b at the time of a failure, an enormous amount of time is spent for incidental work as in the contactless control device 3 and the like, and in a narrow pit. Since the work is done between rails, the work posture is poor, and there are problems in terms of safety and operability.

The present invention has been made to solve the above-mentioned problems, and is intended for a vehicle capable of reducing inspection and maintenance time, improving work efficiency, and improving safety for workers. An object is to provide a semiconductor control device.

[0016]

In order to achieve the above object, the present invention constitutes a vehicle semiconductor control device by the following means. The invention corresponding to claim 1 is a box body which is attached to a lower surface of a vehicle body and internally stores various electric devices by distributing the electric devices on both sides of the vehicle, and a box body formed in the box body. The structure has a drawing-out means for drawing out from the side surface.

According to the second aspect of the present invention, among the various electric devices distributed and arranged on the side faces of the two vehicles, the electric devices that are frequently inspected are placed close to one side face of the vehicle.

According to the third aspect of the present invention, a first electric device such as a contactless control device, which is mounted under the floor of a vehicle body and is frequently used for maintenance and inspection, is arranged on one side of the vehicle.
A box body accommodating and storing a second electric device such as a converter cooling unit or an inverter cooling unit, which has a large number of malfunctions, close to the side surface of the other vehicle, and a box body formed in the box body, in which one of the first electric devices is arranged. The second electric device is pulled out from the side surface of the vehicle and is pulled out from the other side surface of the vehicle.

[0019]

According to the semiconductor control device for a vehicle of the invention according to any one of claims 1 to 3, it is possible to access from both sides of the vehicle at the time of regular inspection and maintenance, and the cooling unit at the time of failure is the side of the vehicle. Since it can be pulled out to, the worker can perform the work in the posture in the stationary position.

Therefore, the additional work before and after the main work as in the prior art is not necessary, and the overall work time can be greatly shortened. Further, since the work posture is improved and the work is started, the work stability and safety can be greatly improved.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view showing a device arrangement of a first embodiment of a vehicle semiconductor control device according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and the same parts as those in FIG. explain.

In the first embodiment, as shown in FIG. 4, the single-phase AC power collected by the pantograph 24 is supplied to the main transformer 2.
5 is supplied to the primary side winding and electric power induced in the two windings on the secondary side is input to the two semiconductor control devices 21 including the converter cooling unit 1 and the inverter cooling unit 2, respectively. AC main motor (induction motor) 23
A case where the present invention is applied to a semiconductor control device for a vehicle of an electric circuit for driving and controlling the vehicle will be described.

In the present embodiment, as shown in FIGS. 1 and 2, the semiconductor control device 21 mounted on the vehicle body 22 has an internal structure in which the submaintenance space 1 in the vehicle traveling direction at the central portion is used.
2 has a structure in which a contactless control device 3 and an AC contactor 4, which are frequently used for regular inspections and maintenance, are housed in a box on both sides of the vehicle and accessible from the side of the vehicle in the direction of arrow 16 in the figure. Further, the converter cooling unit 1 and the inverter cooling unit 2 which often have trouble handling are brought close to both sides of the vehicle to be housed in the box body, and can be pulled out.

Here, the control circuit article 6, the main circuit article 7, and the filter capacitor unit 5 are arranged next to the AC contactor 4 and the main circuit article 7 at the back of the contactless control device 3 and the AC contactor 4. Has been done.

The converter cooling unit 1 and the inverter cooling unit 2 are composed of an electric blower 8, condensers 9 and 9a for element cooling, an anode reactor 10, snubber resistance units 11 and 11a, an element stack 13 and a snubber condenser 14. When it is pulled out to the side of the vehicle, it can be separated from the electric blower 8 side.

Reference numeral 15 in the drawing denotes a vehicle side cover. Therefore, in the vehicle semiconductor control device having such a configuration, the contactless control device 3 and the AC contactor 4 which are frequently inspected and maintained can be accessed from the side surface of the vehicle, so that the vehicle traveling direction in the conventional manner can be improved. The work can be easily performed without removing the connecting members 30 on the front and rear surfaces.

Further, since the converter cooling unit 1 and the inverter cooling unit 2 which have many failures have a structure which can be pulled out from the side of the vehicle, the operator can pull them out horizontally in the direction of arrow 19 shown in FIG. Since it can be placed on the work lifter 18 as described above, the work efficiency is significantly improved as compared with the conventional case where the work is carried out in a mid-waist posture by diving into the rail inner foundation 17.
The safety and operability can be greatly improved.

FIG. 5 shows a second embodiment of the present invention. The same parts as those of FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. Only different points will be described here. In the second embodiment, as shown in FIG. 5, the contactless control device 3 and the AC contactor 4 for two units, which are frequently inspected and maintained, are brought close to one side of the vehicle to the traveling direction of the vehicle. In addition, the converter cooling unit 1 and the inverter cooling unit 2 for two units are arranged close to the side surface of the other vehicle and can be drawn out.

Therefore, according to the vehicle semiconductor control device having such a configuration, the contactless control device 3 and the AC contactor for two units from one side of the vehicle except for the failure of the converter cooling unit 1 and the inverter cooling unit 2. Since the maintenance and inspection of No. 4 can be performed, the working time can be shortened and the working efficiency can be improved as compared with the case of FIG.

7 and 8 show a third embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. Here, only different points will be described. In the third embodiment, as shown in FIG. 6, the single-phase AC power collected by the pantograph 24 is supplied to the primary winding of the main transformer 25, and the electric power induced in the two windings of the secondary side of the main transformer 25. Is input to one semiconductor control device 21 composed of two converter cooling units 1 and one inverter cooling unit 2 via an AC contactor 4 to drive and control an AC main motor (induction motor) 23. The case of application to the vehicular semiconductor control device will be described.

In this embodiment, as shown in FIGS. 7 and 8, the box-shaped contactless control device 3, the control circuit article 6a, and the power supply article 6b are provided on one side of the front and rear ends of the vehicle in the vehicle width direction. And the contactless control device 3 has a structure in which one side of the vehicle can be accessed, and the AC contactor 4 and the filter capacitor 5 are provided on the other side of the front and rear ends in the vehicle traveling direction. Are arranged side by side in the same direction, the AC contactor 4 is structured to be accessible to the other side of the front and rear ends of the vehicle traveling direction, and the converter cooling unit 1 and the inverter cooling unit 2 are further arranged in the vehicle traveling direction. And the electric blower 8 is separated from the cooling units 1 and 2 and can be drawn out to one vehicle side surface.

Therefore, with the semiconductor control device for a vehicle having such a configuration, the contactless control device 3 which is frequently inspected and maintained can be accessed on one side of the vehicle, and the converter cooling unit 1 and the inverter cooling unit are provided. When 2 fails, they can be pulled out to the other side of the vehicle, so that the same effect as the above-described embodiment can be obtained.

[0033]

As described above, according to the present invention, the inspection and maintenance time can be reduced and the working efficiency can be improved.
It is possible to provide a semiconductor control device for a vehicle that can improve the safety for workers.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a vehicle semiconductor control device according to the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a side view for explaining a pulled-out state of the cooling unit in the embodiment.

FIG. 4 is an electric circuit diagram of a vehicle semiconductor control device applied to a first embodiment of the present invention.

FIG. 5 is a plan view showing a second embodiment of the present invention.

FIG. 6 is an electric circuit diagram of a vehicle semiconductor control device applied to a third embodiment of the present invention.

FIG. 7 is a plan view showing a third embodiment of the present invention.

FIG. 8 is a side view for explaining a pulled-out state of the cooling unit in the embodiment.

FIG. 9 is an electric circuit diagram of a conventional general vehicle semiconductor control device.

10A and 10B show an arrangement configuration of internal devices of a conventional vehicle semiconductor control device, in which FIG. 10A is a plan view and FIG.

FIG. 11 is a diagram showing a drawing out state of the cooling unit.

FIG. 12 is an explanatory diagram of a drawing out state of the cooling unit.

FIG. 13 is a front view showing a state in which an operator has slipped between the rail foundations in the pit to remove the internal equipment of the apparatus.

FIG. 14 is a side view showing a state in which the worker has also sunk between the rail foundations in the pit.

[Explanation of symbols]

1 ... Converter cooling unit, 2, 2a, 2b ... Inverter cooling unit, 3 ... Non-contact control device, 4 ...
AC contactor, 5 ... Filter capacitor, 6, 6a ...
Control circuit equipment, 6b ... Power supply equipment, 7 ... Main circuit equipment,
8: Electric blower, 9, 9a: Element condenser, 10 ...
… Anode reactor, 11, 11a …… Snubber resistance unit, 12 …… Sub-maintenance space, 12a …… Cooling air flow, 13 …… Element stack, 14 …… Snubber condenser, 15 …… Car side cover, 16 …… Access direction for important parts requiring inspection, 17 ... Rail foundation in pit, 18
…… Work lifter, 19 …… Unit withdrawal direction, 2
0 ... Workers 21, 21a, 21b ... Semiconductor control device, 22 ... Car body, 23 ... Main motor, 24 ... Pantograph, 25 ... Main transformer, 26 ... Connection conductor, 27 ...
… Vehicle traveling direction, 28 …… Car width direction, 29 …… Other devices, 30 …… Coupling parts.

Claims (3)

[Claims] 1. A box body, which is attached to a lower surface of a vehicle body and internally stores various electric devices in a distributed manner on both vehicle side surfaces, and a drawer which is formed in the box body and draws out the various electric devices from the vehicle side surface. And a semiconductor control device for a vehicle. 2. The vehicle semiconductor control device according to claim 1, wherein among various electric devices, electric devices that are frequently inspected are concentrated and arranged close to one side surface of the vehicle. 3. A converter cooling unit or an inverter cooling unit which is mounted under the floor of a vehicle body and has a first electric device such as a non-contact control device, which is frequently maintained and inspected, disposed on one side of the vehicle and which has many failures. And a second electric device such as a second electric device arranged close to the side face of the vehicle and housed therein, and the first electric device formed on the box body and the second electric device from the one side face of the car. A semiconductor control device for a vehicle, comprising: a pulling-out unit that pulls out the other side of the vehicle.