JP3173243B2 - Vehicle cooling unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle cooling unit, and more particularly to a vehicle cooling unit suitable for mounting on an electric vehicle (battery car).

[0002]

2. Description of the Related Art Conventionally, in a vehicle driven by an internal combustion engine (engine) equipped with an air conditioner, as shown in FIG. A cooling belt 52 is driven by the rotational driving force of the engine 50. On the other hand, although the development of electric vehicles has been progressing in recent years, some electric vehicles equipped with an air conditioner have a vehicle drive motor 5 as shown in FIG.
And a pulley 56 connected to a drive shaft of a cooling compressor 57, and a belt 59 is wound between the pulley 56 and the pulley 58 connected to the drive shaft of the cooling compressor 57, and the cooling compressor 57 is driven by the rotational driving force of the vehicle drive motor 55. Electric vehicles are also being developed.

[0003]

However, in the case of the above-mentioned conventional electric vehicle, since the vehicle is driven by the vehicle driving motor and the cooling compressor is driven, the running ability of the electric vehicle is reduced. There was a problem. Also, since the vehicle drive motor for driving the electric vehicle is originally shared as the drive source of the cooling compressor, the rotation of the cooling compressor is likely to be unstable, and the cooling compressor may be unstable depending on the running condition of the vehicle. However, there is a problem that the performance varies.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages of the prior art. In particular, the present invention has been made possible to make the driving source of the cooling compressor and the driving source of the vehicle independent so that the cooling performance of the vehicle is not reduced. It is an object of the present invention to provide a vehicle cooling unit capable of securing stable performance of a vehicle compressor.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a vehicle cooling unit provided with a cooling compressor for compressing and supplying a refrigerant to a main body of an air conditioner mounted on a vehicle, wherein a driving source of the cooling compressor is provided. As a dedicated compressor drive motor provided independently of the drive source of the vehicle,
Structure of the vehicle body of the front bumper in the side of the bonnet interior of the vehicle
Buffer between upper front member and cross member
Place the bracket vertically through the material, and
Cooling compressor and compressor drive
Are fixed in parallel in the vertical direction . This aims to achieve the above-mentioned object.

[0006]

According to the present invention, a dedicated compressor drive motor is provided independently of the vehicle drive source as the drive source of the cooling compressor, so that the cooling compressor is driven independently of the vehicle drive. It is possible to
As a result, without reducing the running ability of the vehicle,
The rotation of the cooling compressor can be efficiently controlled, and stable performance can be ensured. Therefore, when the vehicle cooling unit is applied to an electric vehicle, the vehicle traveling performance is reduced as in the case where the driving source of the vehicle and the driving source of the cooling compressor are shared as in a conventional electric vehicle. In addition, it is possible to solve the problem that the performance of the cooling compressor varies depending on the running condition of the vehicle. Further, since the arranged for cooling compressor and compressor motor driven in parallel state to the vertically on the front bumper side of the inner hood, a result of suppressing the vehicle body longitudinal dimension of the cooling unit, car
With a dual cooling unit can be installed in a limited space inside the hood, retrofit work to the vehicle body cooling unit for a vehicle, the replacement of the components of the cooling unit for a vehicle, such as an easily than before maintenance It can be carried out. In addition, since the cooling compressor and the motor for driving the compressor are fixed inside the hood via the cushioning material, the phenomenon that the vibration generated by the compressor for cooling and the motor for driving the compressor is transmitted to the vehicle body such as the bonnet is suppressed. Can be.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

First, the overall configuration of an electric vehicle according to the present embodiment will be described with reference to FIGS. 4 and 5. The electric vehicle 1 equipped with an air conditioner (not shown) is modified into, for example, a two-box engine-driven vehicle. A portion of the vehicle body 2 inside the hood 3 and the front bumper 4 and near the right front wheel 5 is provided with a vehicle cooling unit (hereinafter referred to as a vehicle cooling unit).
6 called “cooling unit” . The cooling unit 6 is arranged at a mounting location and a surrounding space of a cooling compressor in an engine-driven vehicle of the same type before remodeling, and a cooling compressor (described later) constituting the cooling unit 6 includes a vehicle drive motor (shown in the drawing). ) Is driven by a dedicated compressor drive motor (to be described later) which is separately provided. In the figure, reference numeral 7 denotes a front left wheel, reference numeral 8 denotes a rear right wheel, and reference numeral 9 denotes a rear left wheel.

Next, the structure and mounting state of the cooling unit 6 of this embodiment will be described in detail with reference to FIGS. 1 to 3. The cooling unit 6 has an electromagnetic clutch for compressing and supplying a refrigerant to the air conditioner body. Cooling compressor 10 (hereinafter abbreviated as cooling compressor 10), compressor driving motor 1 driven by energization from a vehicle-mounted battery (not shown)
1, belt 12, compressor / motor bracket 1
3, for example, four cushions (buffers) 14, 15, 1
6, 17, a vehicle body mounting bracket 18, a cushion mounting plate 19, and the like. in this case,
In the present embodiment, as the cooling compressor 10, an existing cooling compressor provided in an engine-driven vehicle of the same type as the electric vehicle 1 is used.

The cooling compressor 10 and the compressor driving motor 11 are located inside the hood 3 of the vehicle body 2, inside the front bumper 4 and close to the right front wheel 5.
It is arranged vertically in the vehicle body vertical direction. Thus, the size of the cooling unit 6 in the vehicle longitudinal direction is suppressed, and the cooling unit 6 can be attached to a narrow space inside the hood 3 and the front bumper 4. In this case, the lower part of the cooling compressor 10 and the compressor driving motor 11 is covered by the lower end of the front bumper 4.

A pulley 20 connected to a drive shaft 10A of a cooling compressor 10 and a compressor driving motor 11
A belt 12 is stretched between the drive shaft 11A and a pulley 21 connected to the drive shaft 11A.
Are driven via a belt 12 by a compressor driving motor 11. In this case, the cooling clutch 10 is provided with the electromagnetic clutch for power saving of the compressor 10. Symbol 2 in the figure
Reference numerals 2 and 23 denote pipes for connecting the cooling compressor 10 and the air conditioner main body.

By installing a compressor driving motor 11 as a driving source of the cooling compressor 10 independently of a vehicle driving motor as a driving source of the electric vehicle 1, a conventional vehicle driving motor is used for cooling. In addition to solving the problems such as a decrease in the vehicle running performance and an unstable rotation of the cooling compressor as in the method of driving the compressor for cooling, the work of retrofitting the cooling unit 6 to the vehicle body 2 and the operations of the cooling unit 6 It is possible to relatively easily perform a component replacement operation, a maintenance operation, and the like.

The compressor 10 for cooling and the motor 11 for driving the compressor are fixed integrally to the compressor / motor bracket 13 arranged vertically in the vertical direction of the vehicle body.
It is arranged below the cooling compressor 10. The lower end of the compressor / motor bracket 13 is fixed to the cushions 14, 15 by nuts 14A, 15A, and the cushions 14, 15 are fixed to the cushion mounting plate 19 by bolts 14B, 14C, 15B, 15C.

Further, the cushion mounting plate 19 is fixed to the cross member 24 constituting the vehicle body 2 by, for example, welding. On the other hand, the upper part of the compressor / motor bracket 13 is fixed to the cushions 16 and 17 by nuts 16A and 17A.
Reference numeral 7 is fixed to the vehicle body mounting bracket 18 by bolts (not shown). Body mounting bracket 18
Is fixed to an upper front member 25 constituting the vehicle body 2 by bolts (not shown). In the drawing, reference numeral 26 indicates a lower front member.

Cushions 14, 15 are interposed between the lower end of the compressor / motor bracket 13 and the cushion mounting plate 19, and the upper portion of the compressor / motor bracket 13 and the vehicle body mounting bracket 18 are provided.
By interposing the cushions 16 and 17 between the two, the vibration generated when the compressor driving motor 11 drives the cooling compressor 10 is absorbed, thereby suppressing the vibration to the vehicle body 2.

Next, the operation of the embodiment constructed as described above will be described.

During operation of the air conditioner provided in the electric vehicle 1, when power is supplied from the vehicle-mounted battery to the compressor driving motor 11, the compressor driving motor 11 is driven to rotate, and the rotational driving force of the compressor driving motor 11 is reduced by the belt 12. To the compressor 10 for cooling. Thus, the cooling compressor 10 is driven to rotate, compresses the refrigerant, and supplies the refrigerant to the air conditioner main body.

In this case, the compressor driving motor 11 as the driving source of the cooling compressor 10 is installed independently of the vehicle driving motor as the driving source of the electric vehicle 1. It is possible to drive the cooling compressor 10 irrespective of the above, and therefore, without lowering the running performance of the electric vehicle 1
The rotation of the cooling compressor 10 can be efficiently controlled, and stable performance can be ensured.

Further, since an existing cooling compressor provided in an engine-driven vehicle of the same type as the electric vehicle 1 is used as the cooling compressor 10, it is possible to newly manufacture a cooling compressor for the electric vehicle. This eliminates the need for the cooling compressor 10, thereby ensuring the original performance of the cooling compressor 10 and reducing the cost. Further, the drive source of the cooling compressor 10 and the drive source of the electric vehicle 1 are made independent, and the cooling unit 6 is installed inside the front bumper 4 inside the hood 3, so that the cooling unit 6 Post-installation work, replacement work of each component of the cooling unit 6, maintenance work, and the like can be performed relatively easily.

When the cooling compressor 10 and the compressor driving motor 11 are driven, vibrations are generated in the cooling compressor 10, the compressor driving motor 11, the compressor / motor bracket 13 and the like. Between the lower end of the cushion and the cushion mounting plate 19.
5 and the cushions 16 and 17 are provided between the upper part of the compressor / motor bracket 13 and the vehicle body mounting bracket 18, so that vibrations are absorbed by the cushions 14-17. Thereby, it is possible to suppress a phenomenon that the vibration generated by the cooling compressor 10 and the compressor driving motor 11 is transmitted to the vehicle body 2 side.

Further, since the cooling compressor 10 and the compressor driving motor 11 are arranged vertically inside the hood 3 of the vehicle body 2 and inside the front bumper 4, the vehicle body of the cooling unit 6 The dimension in the front-rear direction can be suppressed, whereby the cooling unit 6 can be installed in a limited space inside the hood 3.

As described above, according to the present embodiment, a dedicated compressor driving motor 11 is provided as a driving source of the cooling compressor 10 and the cooling compressor 10 and the compressor driving motor 11 are connected to the bonnet 3.
Place in a vertical stationary state to the vertical direction of the vehicle body and the inside of the front bumper 4 in the interior of the compressor / motor bracket 1
3 and cushion mounting plates 19, cushions 14 and 15 are provided, and the upper part of the compressor / motor bracket 13 and the vehicle body mounting bracket 1 are mounted.
Equipped with cushions 16 and 17 between
Efficient rotation control and stable performance of the cooling compressor 10 can be ensured, the cooling unit 6 can be installed in a limited space inside the bonnet 3, and vibration transmitted from the cooling unit 6 to the vehicle body 2 can be suppressed.

Further, according to the present embodiment, the cooling unit 6
Is arranged at the cooling compressor mounting point and the surrounding space of the engine-driven vehicle before the remodeling of the same type as the electric vehicle 1, so that the existing piping or accessory mechanism for connecting the cooling unit 6 and the air conditioner body is used. It can be used, thereby reducing costs.

In this case, in this embodiment, a case where the vehicle cooling unit is applied to a two-box type electric vehicle is taken as an example.
Mentioned were, but not limited thereto, it can be applied to an electric vehicle of the 3-box.

[0025]

As described above, according to the vehicle cooling unit of the present invention, the following effects can be obtained. Since a dedicated compressor drive motor is installed independently of the drive source of the vehicle as a drive source of the cooling compressor, it is possible to drive the cooling compressor independently of the drive of the vehicle, The rotation of the cooling compressor can be controlled efficiently and stable performance can be ensured without reducing the running performance of the vehicle. Therefore, when the vehicle cooling unit is applied to, for example, an electric vehicle, the vehicle running performance is reduced as in the case where the driving source of the vehicle and the driving source of the cooling compressor are shared as in a conventional electric vehicle. In addition, it is possible to eliminate such a problem that the performance of the cooling compressor varies depending on the running condition of the vehicle. Also , the front bumper inside the vehicle hood
Upper front members and Kurosumen constituting a vehicle body inner side
Arrange the bracket vertically between the bracket and
Cooling compressor and compressor drive
Since the cooling units are arranged in parallel in the vertical direction, the size of the cooling unit in the front-rear direction of the vehicle body can be reduced. As a result, the cooling unit can be installed in a limited space inside the bonnet. The inside of the vehicle body including the cooling unit can be effectively used, and the work of retrofitting the cooling unit to the vehicle body, the work of replacing each component of the cooling unit, the maintenance work, and the like can be performed more easily than before. Furthermore, since the cooling compressor and the compressor driving motor are fixed inside the bonnet via the cushioning material, the phenomenon that the vibration generated by the cooling compressor and the compressor driving motor is transmitted to the hood and other vehicle bodies is suppressed. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a cooling unit according to an embodiment of the present invention.

FIG. 2 is a front view of the cooling unit of the embodiment.

FIG. 3 is a right side view of the cooling unit of the embodiment.

FIG. 4 is a schematic front view of the electric vehicle according to the embodiment.

FIG. 5 is a schematic right side view of the electric vehicle according to the embodiment.

FIG. 6 is an explanatory view showing a state in which a cooling compressor is attached to a conventional engine.

FIG. 7 is an explanatory view showing a state in which a cooling compressor is attached to a conventional vehicle drive motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Body 3 Bonnet 4 Front bumper 6 Cooling unit 10 Cooling compressor 11 Compressor drive motor 12 Belt 13 Compressor / motor bracket 14, 15, 16, 17 Cushion as cushioning material 18 Car body mounting bracket 19 Cushion mounting plate

Claims (1)

(57) [Claims] 1. A vehicular cooling unit having a cooling compressor for compressing and supplying a refrigerant to a main body of an air conditioner mounted on a vehicle, wherein a driving source of the vehicle is provided as a driving source of the cooling compressor. independently a dedicated compressor drive motor, the vehicle body of the front bumper in the side of the bonnet interior of the vehicle
Between the upper front member and the cross member
Arrange the bracket vertically through the cushioning material, and
Racket for cooling compressor and compressor drive
The motor is fixed in parallel in the vertical direction.
Vehicle cooling unit.