JPH11210486A - Accessory unit device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the mountability and the working ability for taking an accessory unit device out from and into a hybrid electric vehicle during inspection and maintenance of the accessories. SOLUTION: In a hybrid electric vehicle incorporating a generator driven by an engine, a battery for charging therein generated power, and a motor driven by the battery as a power source, for traveling a vehicle, accessories such as a motor driven pump 25 for forcibly circulating cooling water through electric units including the generator, the traveling motor in a drive system, a cooler unit 14 incorporating a motor fan, for radiating heat from the cooling water, a compressor 27 for air-conditioning, a motor 28 for driving the latter, and the like are mounted by means of an attaching frame which is removably attached to the vehicle body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary unit unit for a hybrid electric vehicle or the like.

[0002]

2. Description of the Related Art Conventionally, there is a hybrid electric vehicle in which an engine and an electric motor are combined to improve exhaust emission. Such a hybrid electric vehicle includes a generator driven by an engine and a battery for storing the generated power, and the vehicle is driven by driving an electric motor for driving the vehicle through an inverter using the power as a power source. ing.

[0003]

In such a hybrid electric vehicle, an air compressor and an electric motor for driving the air compressor, an oil pump (electric pump) for power steering, a compressor for an air conditioner, and an electric motor for driving the air compressor are used as auxiliary equipment. In addition to the motor, an electric pump that forcibly circulates cooling water to the driving system such as a generator and an electric motor for running the vehicle, and a cooler unit with an electric fan that dissipates the heat of the cooling water to the outside are installed. However, a large space is required for storing them.
Also, from the viewpoint of ease of mounting on the vehicle and maintenance, it is desirable that these auxiliary devices are not collectively arranged separately but stored collectively in one place inside the vehicle body.

[0004] As an example of an electric vehicle, there has been devised a mounting structure of a control unit for controlling an electric motor for driving a vehicle to enhance the shock (energy) absorption characteristics of the vehicle in the event of a frontal collision. Kaihei 9-5
2534).

An object of the present invention is to solve such a problem in a hybrid electric vehicle.

[0006]

According to a first aspect of the present invention, there is provided a generator driven by an engine, a battery for storing the generated power, and an electric motor for driving a vehicle driven by the power. For hybrid electric vehicles, an electric pump that forcibly circulates cooling water to drive system electric devices such as a generator and an electric motor for running the vehicle, a cooler unit with an electric fan that dissipates the heat of the cooling water to the outside, and an air conditioner Auxiliary equipment such as a compressor and an electric motor for driving the compressor, an air compressor and an electric motor for driving the air compressor are mounted on the vehicle body via a detachable mounting base.

According to a second aspect, in the first aspect, a cooling circuit is provided for circulating a part of cooling water from an electric pump of a cooling system to auxiliary equipment such as an air compressor and an electric motor for driving the air compressor.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, a connector for wiring and piping of auxiliary equipment is intensively arranged around the mounting base.

[0009]

According to the first aspect of the present invention, the electric pump for forcibly circulating the cooling water to the electric equipment of the drive system and the cooler unit with the electric fan for dissipating the heat of the cooling water to the outside also have other auxiliary machines. Are stored together through an assemblable stand that can be taken out to the vehicle body side. Therefore, in addition to the attachment and detachment of each auxiliary device, the processing (connection and disconnection) of the wiring and piping associated therewith can be efficiently performed. Further, the piping and wiring between the auxiliary devices are shortened, and these auxiliary devices can be efficiently and compactly stored in the vehicle body.

In the second aspect of the present invention, part of the cooling water to the electric equipment of the drive system also radiates the heat generated by the auxiliary equipment such as the air compressor from the cooler unit to the outside. Therefore, the temperature environment of the auxiliary equipment can be properly maintained without increasing the number of cooler units and electric pumps.

According to the third aspect of the present invention, the wiring and piping connectors of the auxiliary equipment are concentrated around the mounting base, so that the processing of the piping and wiring (connection and disconnection) accompanying the mounting and dismounting of the mounting base.
Can be easily performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a power room provided at the rear of a vehicle such as a bus.
A generator 3 driven by the engine 2, a battery 4 for storing electric power generated by the generator 3, and traveling motors 5 and 6 driven by the generator 3 and the battery 4 via an inverter 7 and the like Is stored.

Partition walls are formed at the front and upper parts of the power room 1, and the left and right sides are surrounded by side panels 8 of the vehicle body, and the rear part (rear side of the vehicle) is surrounded by the back panel of the vehicle body. Engine 2
Is mounted horizontally on the left side of the power room 1 (left side of the vehicle)
The generator 3 is connected to the engine 2. 9 is an air cleaner. The electric motors 5 and 6 are on the right side of the power room 1 (right side of the vehicle).
The driving force is transmitted from the drive shaft via the speed reducer 10 and further from the differential to the drive wheels.

The inverter 7 is stored in the inverter room 11 in the middle part of the power room 1 on the right side of the figure (right side of the vehicle), and the battery 4 is stored in the battery room 12 above the inverter room 11. Auxiliary equipment such as an air compressor 13 and a cooler unit 14 with an electric fan is disposed between the generator 3 and the electric motor 6 and the inverter room 11.

The engine 2 is located between the engine 2 and the generator 3.
The heat shield plate 15 is interposed so that the hot air around the generator does not flow into the vicinity of the generator 3. The heat shield plate 15 is formed so as to partition the generator 3 from the engine room 16 between the front part and the rear part of the power room 1, and also to partition the inverter room 11 and the battery room 12 from the engine room 16. The power room 1 extends to the upper part.

The auxiliary equipment such as the air compressor 13 is shown in FIG.
As shown in FIG. 3, they are collectively placed on one mounting table 20 and stored so as to be removable via the mounting table 20 toward the vehicle body as described later. The assembling base 20 is formed by connecting a pier member to the inside of a rectangular frame so as to divide the same into a plurality of installation surfaces. Auxiliary equipment is mounted on the plurality of installation surfaces in a predetermined layout, and a forklift is mounted on the lower surface thereof. A nail guide 21 is provided.

As auxiliary equipment, an air compressor 13 and an electric motor 23 for driving the same via a gear box 22, an oil pump 24 (hydraulic pump) for power steering connected to a rotating shaft of the air compressor 13, In addition to the compressor 27 for the air conditioner and the electric motor 28 for driving the compressor 27 via the pulley 29 and the belt 30, the cooling water is forcibly circulated to the electric equipment of the driving system such as the generator 3 and the electric motors 5 and 6 for running the vehicle. An electric pump 25 to be operated and a cooler unit 14 with an electric fan for dissipating the heat of the cooling water to the outside are arranged.

The outlet side of the cooler unit 14 and the suction side of the electric pump 25 are connected via a pipe 31. A water supply port 34 is connected to a pipe 32 on the inlet side of the cooler unit 14 and a pipe 33 on the discharge side of the electric pump 25. A water absorption port 35 is provided. Piping (not shown) on the vehicle body side is separably connected to these ports 34 and 35 via receiving ports, and electric devices of the drive system (the generator 3, the electric motors 5, 6, the inverter 7,
A cooling circuit (not shown) via the battery 4 or the like is formed.

The compressor 13 and the electric motors 23 and 28
The water jackets 36 to 38 are formed inside these in order to keep the temperature properly. Each jacket 36-38
Are connected in series via pipes 39 and 40, a pipe 41 branching from the water supply port 35 side of the electric pump 25 on the upstream side, and a pipe 42 joining the water suction port 34 side of the cooler unit 14 on the downstream side. Each is connected. The compressor 13 and its electric motor 23 and the electric motor 28 of the air conditioner compressor 27 are cooled by a part of the cooling water circulating through the cooling circuit of the drive system.

The oil pump 24 driven by the rotation of the air compressor 13 has an oil feed port 44 on a suction side pipe 43 and an oil suction port 47 on a discharge side pipe 46.
A power steering pipe (not shown) is detachably connected to these ports 44 and 47 via respective receiving ports. Ports 48 and 50 are formed in pipes 47 and 49 of the air compressor 13, and ports 52 and 54 are ports formed in pipes 51 and 53 of the air conditioner compressor 27. These ports 48, 50, 52 and 54 are also on the vehicle body side. To the pipe (not shown) via its socket.

The ports 34, 35, 44, 46,
Reference numerals 48, 50, 52, and 54 each constitute a connector part together with a counterpart receiving port, and are arranged around the mounting table 20 toward an opening / closing door 60 and an inspection lid 61 described later.
These receptacles are provided at positions corresponding to the respective ports in the accessory machine room 56 (on the vehicle body side). A countermeasure (not shown) for suppressing water leakage, oil leakage, and air leakage due to the separation of the piping is assembled to these ports and receiving ports.

A terminal box 57 is disposed around the inspection lid 61 of the mounting base 20 as a wiring connector of the auxiliary equipment, and is separably connected to the power supply via a plug (not shown). Compressor 13 and oil pump 2
The electric motor 23, the electric pump 25 of the cooling system, the electric fan 26a of the cooler unit 14, and the electric motor 28 of the air conditioner compressor 27 are wired to a terminal box 57 as shown in FIG.

The accessory room 56 is provided between the front part 62 of the power room 1 (partition wall from the vehicle room) and the back panel 63 on the rear of the vehicle body, the right side panel 8 of the vehicle body, the heat shield plate 15 and the floor of the inverter room 11. (See FIG. 1), but the bottom surface is open to the electric motors 5 and 6 side. The mounting table 20
A receiving surface 68 (flange) for supporting the power supply approximately horizontally is formed on the frame (the body frame side) of the power chamber 1, and the mounting base 20 can be removed at a predetermined support position through appropriate means (for example, a bolt and nut). Fixed to

An opening / closing door 55 is provided on a back panel 63 on the rear surface of the vehicle body.
Auxiliary equipment can be put in and out together with the mounting base 20 through the opening. Reference numeral 60 denotes an opening / closing door for performing maintenance and inspection work of auxiliary machines and the like, and is provided on the side panel 8 on the right side of the vehicle body. In addition, an inspection lid 61 for opening and closing the auxiliary equipment room 56 is provided on a front portion 62 of the power room 1.

With such a configuration, the electric pump 25 for forcibly circulating the cooling water to the electric equipment of the drive system and the cooler unit 14 with the electric fan for dissipating the heat of the cooling water to the outside are also provided with other auxiliary machines. Auxiliary equipment room 5 together with
6 is stored via a removable mounting table 20.

For maintenance and inspection of the auxiliary equipment, the opening / closing door 60 and the inspection door 61 are opened and each pipe is separated into the receiving side and the ports 34, 35, 44, 46, 48, 50, 52, 54 side. At the same time, the power plug is separated from the terminal box 57. Then, when the opening and closing door 55 is opened to release the fixing of the assembling table 20, the auxiliary machine can be carried out of the auxiliary machinery room 56 together with the assembling table 20. When returning to the accessory machine room 56, the accessory is carried into the receiving surface 68 together with the mounting table 20, and the mounting table 20 is fixed to the receiving surface 68 on the vehicle body side at a predetermined position. And the ports 34, 35, 44, 46, 48,
50, 52, 54 are connected to the receptacles, and the power supply side plug is connected to the terminal box 57.

As described above, since the auxiliary equipment can be put in and out of the auxiliary equipment room 56 together with the mounting base 20, maintenance and inspection can be easily performed in a wide outside. At this time, the auxiliary machines are not individually mounted, but can be easily attached and detached integrally with the mounting base 20. Connection and separation of wiring and piping can be processed collectively.

Since the ports of each pipe and the terminals of each wiring are concentrated at predetermined locations in the periphery of the mounting base 20, the work of connecting and separating these pipes and wiring is also performed by the inspection cover 61 and the opening / closing door 60. Easy and easy to do through the opening. Since the piping and wiring between the auxiliary machines are shortened in the mounting table 20, these auxiliary machines can be efficiently and compactly stored in the vehicle body.

The heat generated by the air compressor 13 and its electric motor 23 and the compressor 28 for the air conditioner is also radiated to the outside from the cooler unit 14 by a part of the cooling water of the drive system.
The temperature environment of the auxiliary equipment room 56 can be properly maintained without increasing the temperature.

[Brief description of the drawings]

FIG. 1 is an arrangement configuration diagram of a power chamber showing an embodiment of the present invention.

FIG. 2 is a plan view of the auxiliary device.

FIG. 3 is a schematic configuration diagram similarly illustrating a power chamber and an assembly base.

FIG. 4 is an electrical wiring diagram of the auxiliary equipment and the terminal box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 13 Compressor 14 Cooler unit 20 Assembling stand 23 Electric motor for compressor (also used as oil pump) 24 Oil pump 25 Electric pump 27 Compressor for air conditioner 28 Electric motor for air conditioner 34, 35, 44, 46, 48, 50, 52, 54 Each Piping port 56 Auxiliary equipment room 57 Terminal box 55, 60 Opening / closing door 61 Inspection lid 68 Receiving surface of mounting base

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI F02D 29/06 B60K 9/00 Z F16M 1/00 (72) Inventor Hiroshi Ienaka Nissan Diesel, Ichibanchi 1-chome, Daio, Ageo-shi, Saitama (72) Inventor Hirofumi Hamaoka 1-7-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Fuji Heavy Industries Ltd. (72) Inventor Kiyotada Yamazaki 1-72, Nishi-Shinjuku, Shinjuku-ku, Tokyo Fuji Heavy Industries Co., Ltd. In company

Claims (3)

[Claims] A hybrid electric vehicle comprising a generator driven by an engine, a battery for storing the generated power, and an electric motor for driving the vehicle driven by the power source. Pump for forcibly circulating cooling water to electric equipment such as an electric motor for driving, a cooler unit with an electric fan for dissipating the heat of the cooling water to the outside, a compressor for an air conditioner, an electric motor for driving the compressor, and air An auxiliary unit unit characterized by mounting auxiliary equipment such as a compressor and an electric motor for driving the compressor via a detachable mounting base on a vehicle body side. 2. A cooling circuit according to claim 1, wherein a cooling circuit for circulating a part of cooling water from an electric pump of a cooling system to an auxiliary machine such as an air compressor and an electric motor for driving the air compressor is provided. Machine unit equipment. 3. The auxiliary equipment unit device according to claim 1, wherein connector parts for wiring and piping of the auxiliary equipment are intensively arranged around the mounting base.