JP2007331634A - Motor room inner component mounting structure for electric automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor room inner component mounting structure for an electric automobile. <P>SOLUTION: In the motor room inner component mounting structure for the electric automobile, strut towers 5 rising from a pair of side members 4 and fixing a shock absorbing device of a suspension device, and a dash panel 3, define a motor room for installing a fuel cell module 20 of the electric automobile, while the motor room is provided with a plurality of mount members 6 respectively wound between the side members and the strut towers, and the fuel cell module is fixed to the mount members. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a component mounting structure in a motor room of an electric vehicle.

  As a conventional component mounting structure in a motor room of an electric vehicle, there is a technique described in Patent Document 1. This technology relates to the arrangement of a vacuum pipe connected to a vacuum pump of an electric vehicle, and arranges the vacuum pipe to a mount member on which a control unit is mounted. Here, the mount member is fixed to the strut tower and the side member.

  In the technique described in Patent Document 2, a control unit and motor accessories are fixed to the upper surface of a component-mounted frame, and a unit assembly having a motor unit fixed to a lower surface is fixed to a side member.

The technique described in Patent Document 3 is such that a control unit is mounted across a pair of cross members that are coupled across side members and are offset in the front and rear directions, and a shelf is attached to the bottom of the control unit in the vehicle width direction. The parts in the motor room are attached to the cross member via the shelf.
Japanese Patent Laid-Open No. 10-329701 JP-A-8-310252 JP-A-8-67150

  However, the prior art disclosed in these patent documents is a technique for mounting a controller, a motor, or the like in a motor room, and is premised on mounting a fuel cell as a power supply source of the motor in the motor room. However, when a fuel cell is mounted together with a controller or the like, in these conventional techniques, the lower end of the controller or the like is only fixed to the mount member, and the fuel cell cannot be firmly fixed to the mount member. There is.

  Accordingly, an object of the present invention is to provide a component mounting structure in a motor room of an electric vehicle that can reliably mount a fuel cell and a controller when the fuel cell is mounted together with a controller in the motor room of the electric vehicle. Is to provide.

  The present invention comprises a pair of side members extending in the longitudinal direction of a vehicle, a strut tower standing from the side members and fixing a shock absorber of a suspension device, and a dash panel as a partition wall of a passenger compartment. A motor for an electric vehicle in which a fuel cell module is provided, comprising: a motor as a vehicle drive source; a fuel cell stack for supplying electric power to the motor; and a controller for controlling an operating state of the motor and the fuel cell stack. A structure for mounting components in a motor room of an electric vehicle, comprising: a plurality of mount members spanned between the side members and between the strut towers in a room, wherein the fuel cell module is fixed to the mount members. It is.

  In the present invention, the fuel cell module is fixed to the mount member that spans between the side members and between the strut towers. It can be firmly fixed.

  FIG. 1 is a configuration diagram of a motor room to which a component mounting structure in a motor room of a fuel cell vehicle according to the present invention is applied.

  In FIG. 1, reference numeral 1 denotes a motor room in which a motor of a vehicle drive source is mounted. The motor room 1 is joined to a pair of left and right hood ridge panels 2 and a rear end side of the hood ridge panel 2, and a dash panel 3 that divides the cabin. , And a radiator core support panel (not shown) that supports the radiator. Side members 4 as strength skeleton members extending in the front-rear direction are joined to the lower portions of the left and right hood ridge panels 2, and the hood ridge panel 2 near the connecting portion between the hood ridge panel 2 and the dash panel 3 is joined to the hood ridge panel 2. Is provided with a strut tower 5 which is a vertical skeleton member for supporting a shock absorber constituting a front suspension (not shown).

  2 and 3 are views for explaining a mount member installed to mount the fuel cell unit according to the first embodiment of the present invention. FIG. 2 is a front view of the motor room 1 (cross-sectional view of the strut tower 5), and FIG. 3 is a plan view.

  Here, the mount member modularizes the fuel cell unit 21 including the fuel cell stack, the operation state of the fuel cell, and the controller 22 and the drive motor 23 that control the operation state of the drive motor that drives the vehicle. It is a structural member used for installing and fixing the fuel cell module 20 in the motor room 1.

  The mount members of this embodiment are installed in a total of four in the left-right direction. Specifically, the mount members are spanned between the first mount member 6a spanned between the strut tower 5 and the side members 4, and installed on the upper surface of the side member. The second mount member 6b and the two third and fourth mount members 6c and 6d, which are also spanned between the side members 4 and are offset on the lower surface of the side member in the front-rear direction.

  The first and second mount members 6a and 6b are configured to be attachable from above the motor room 1, whereas the third and fourth mount members 6c and 6d are configured to be attachable to the side member 4 from below the motor room 1. Is done. Next, as a procedure for fixing the fuel cell module 20, the third and fourth mount members 6c and 6d are attached to the lower surface of the side member 4, and the fuel cell module 20 is attached to the third and fourth mount members from above the motor room 1. The first and second mount members 6a and 6b are fixed to the upper surfaces of the strut tower 5 and the side member 4, and the fuel cell module 20 is then fixed to the first and second mount members 6a and 6b. To fix. Alternatively, the first and second mount members 6a and 6b are first fixed, the fuel cell module 20 is installed and fixed to the first and second mount members 6a and 6b from below, and finally the third and fourth mount members are fixed. You may make it fix 6c, 6d. With such a method, the fuel cell module 20 can be firmly fixed in the motor room 1 by fixing the upper and lower sides of the fuel cell module 20 using the mount members.

  Further, as another fixing method of the fuel cell module 20, the radiator core support panel is made detachable, the radiator core support panel is detached, and the third and fourth mount members 6c and 6d are attached to the fuel cell module 20. There is a method of installing the battery module 20 in the motor room 1 from the front. In this case, a flat plate member is provided over the third and fourth mount members 6c and 6d, and the fuel cell module 20 slides from the front to the rear on the flat member and moves to a predetermined position. Then, the fuel cell module 20 can be securely fixed to the motor room 1 by being fixed to the third and fourth mount members 6c and 6d and then installing and fixing the first and second mount members 6a and 6b. Further, since the fuel cell module 20 can be slid and moved, an effect of improving workability can be expected. When the fuel cell module 20 is installed in the motor room 1 from above, the hood becomes an obstacle, and when it is installed from below, the size of the fuel cell module 20 is limited by the distance between the side members 4. On the other hand, when installed from the front of the vehicle, the restriction on the size of the fuel cell module 20 is smaller than when installed from the other direction, and a larger module can be installed in the motor room 1. It becomes.

  As described above, in the present embodiment, a plurality of mount members extending in the left-right direction in the motor room are provided between the strut towers 5 and the side members 4, and the fuel cell module 20 is fixed to the mount members. The upper and lower portions of the fuel cell module 20 can be fixed. Further, by installing the first to fourth mount members 6a to 6d between the side members 4 and between the strut towers 5, the vehicle body rigidity can be improved.

  Further, since the first and second mount members 6a and 6b are attached from above the motor room 1, and the third and fourth mount members 6c and 6d are attached from below the motor room 1, the mounting workability of these mount members 6a to 6d is improved. can do.

  Further, since the third and fourth mount members 6c and 6d are attached to the lower surface of the side member 4, the installation space for the fuel cell module 20 is not reduced.

  4 and 5 are diagrams illustrating the mount member according to the second embodiment. The difference of the configuration of the mount member of this embodiment from the first embodiment is that a front / rear mount member 7a extending in the vehicle front-rear direction is added between the third and fourth mount members 6c, 6d to form a cross beam shape. This is the point. This configuration uses the front and rear mount members 7a in place of the flat plate member when the fuel cell module 20 is installed in the motor room 1 from the front, thereby reducing the weight while maintaining the same effect. It can be planned.

  6 to 8 are views for explaining a mount member according to the third embodiment. The structure of the mount member of this embodiment is vertically extended between the first and second mount members 6a and 6b and the third and fourth mount members 6c and 6d with respect to the mount member of the second embodiment. Further, the first and second upper and lower mount members 8a and 8b are added.

  In the above embodiments, the second mount member 6b has a rod shape. However, in this embodiment, the second mount member 6b is changed to a U-shaped mount member 6e that opens downward. A pair of first upper and lower mount members 8a for vertically connecting the mount member 6e and the third mount member 6c positioned below the mount member 6e are provided on the left and right. In addition, a pair of second upper and lower mount members 8b that connect the first mount member 6a and the fourth mount member 6d positioned below the first mount member 6a in the vertical direction are provided on the left and right. Further, left and right mount members 9 are provided for connecting the first upper and lower mount members 8a in the left-right direction. Thus, by adding mount members in the vertical and horizontal directions, the rigidity of the mount members can be increased, and as a result, the vehicle body rigidity can be improved. Further, since the mount member is increased in size and rigidity is increased, the mount member can be used as a structural member of the fuel cell module 20 to simplify and reduce the weight of the fuel cell module 20. Note that left and right mount members may also be provided between the second upper and lower mount members 8b.

  Further, since the first upper and lower mount members 8a and the left and right member mounts 9 are disposed in front of the fuel cell module 20, the safety at the time of collision of the fuel cell module 20 can be increased by these. Since the first vertical mount member 8a is located in the vicinity of a radiator (not shown) located at the front end of the vehicle, the first vertical mount member 8a can also be used for mounting a water supply / drainage pipe of the radiator, and effectively uses the space in the motor room 1. can do.

  The fuel cell module 20 is fixed to a mount member disposed in the motor room 1 using bolts or the like. Here, workability can be improved by unifying the direction of the bolt in the front-rear direction or the vertical direction.

  FIG. 9 is a diagram illustrating a configuration for connecting the first upper and lower mount members 8a and the third mount member 6c. A U-shaped bracket 10 is fixed to the third mount member 6c, and the first upper and lower mount members 8a are arranged between the brackets 10 and fixed by bolts (not shown).

  FIG. 10 is an external view for explaining the configuration of the fuel cell module 20 arranged in the motor room 1. The fuel cell module 20 includes the fuel cell unit 21, the controller 22, and the drive motor 23 as described above. The fuel cell unit 21 including the fuel cell stack is the largest of these configurations and is disposed in front of the vehicle. The controller 22 is connected to the rear of the fuel cell unit 21, and the drive motor 23 is disposed below them.

  As a procedure for arrangement in the motor room 1, first, the drive motor 23 and the controller 22 are arranged, and the wiring between the drive motor 23 and the controller 22 is connected. Before arrangement of the fuel cell unit 21, there is sufficient space in the motor room 1, the workability of wiring connection is good, the drive motor 23 and the controller 22 are adjacent in the vertical direction, and the wiring is also short. can do. After the wiring connection, the fuel cell unit 21 is disposed in the motor room 1 and fixed to the controller 22.

  The fuel cell unit 21 includes a case for interior of the fuel cell stack, while the controller 22 also includes a case for storing electronic components such as a CPU disposed therein, and these cases are disposed in the motor room 1. It is fixed to the mounted member. Here, when these cases have sufficient rigidity, they function as structural members, and as a result, the vehicle body rigidity can be improved.

  After the controller 22 and the drive motor 23 are installed, the fuel cell unit 21 is disposed at a predetermined position from the top or bottom of the motor room 1 or in front of the motor room 1. can do. Since the wiring connecting the fuel cell unit 21 and the controller 22 connects the connection terminals provided on the respective upper surfaces, the wiring does not protrude from the fuel cell module 20 in the front-rear direction, and the wiring and connection terminals are damaged in the event of a collision. It is possible to improve safety. Furthermore, by arranging the connection terminals on the upper surfaces of the fuel cell unit 21 and the controller 22, the wiring can be easily connected and workability can be improved.

  The present invention is not limited to the embodiment described above, and various modifications and changes can be made within the scope of the technical idea, and it is obvious that these are equivalent to the present invention.

It is a block diagram of the motor room to which this invention is applied. It is a front view explaining the structure of the mount member of 1st Embodiment. It is a top view explaining the structure of the mount member of 1st Embodiment. It is a front view explaining the structure of the mount member of 2nd Embodiment. It is a top view explaining the structure of the mount member of 2nd Embodiment. It is a front view explaining the structure of the mount member of 3rd Embodiment. It is a top view explaining the structure of the mount member of 3rd Embodiment. FIG. 8 is a cross-sectional view taken along the line AA of FIG. 7 for explaining the configuration of the mount member of the third embodiment. It is a figure explaining connection with the 1st top-and-bottom mount member and the 3rd mount member. It is an external view of the fuel cell module installed in a motor room.

Explanation of symbols

1: Motor room 2: Hood ridge panel 3: Dash panel 4: Side member 5: Strut tower 6a, 6b: First and second mount members 6c, 6d: Third and fourth mount members 7a: Front and rear mount members 8a, 8b: first and second upper and lower mount members 9: left and right member mounts 10: bracket 20: fuel cell module 21: fuel cell unit 22: controller 23: driving motor

Claims (9)

A pair of side members extending in the longitudinal direction of the vehicle;
A strut tower standing from this side member and fixing the suspension shock absorber,
It is divided from the dash panel as a partition with the guest room,
In a motor room of an electric vehicle in which a fuel cell module including a motor as a vehicle drive source, a fuel cell stack for supplying electric power to the motor, and a controller for controlling the operating state of the motor and the fuel cell stack is installed. ,
A plurality of mount members each spanned between the side members and between the strut towers;
A structure for mounting components in a motor room of an electric vehicle, wherein the fuel cell module is fixed to the mount member.   2. The component mounting structure in the motor room of the electric vehicle according to claim 1, wherein an upper portion and a lower portion of the fuel cell module are fixed to the mount member. The mount member includes a first mount member spanned between the strut towers;
A second mount member attached to the upper surface of the side member from above;
2. The component mounting in the motor room of the electric vehicle according to claim 1, comprising third and fourth mount members that are attached to the lower surface of the side member from below and are offset from each other in the front-rear direction. Construction.   The structure for mounting components in a motor room of an electric vehicle according to claim 3, wherein front and rear connection members for connecting the third and fourth mount members forward and backward are provided.   The structure for mounting components in a motor room of an electric vehicle according to claim 4, wherein the front and rear connecting members are formed in a flat plate shape.   The said front-rear connecting member is a pair of rod-shaped members that are offset from each other in the left-right direction. A pair of first upper and lower connecting members that vertically connect the second mount member and the third mount member disposed below the second mount member and are offset in the left-right direction;
A pair of second upper and lower connecting members that vertically connect the first mount member and the fourth mount member disposed below the first mount member, and are offset in the left-right direction;
The left and right connecting members for connecting at least one of the first upper and lower connecting members and the second upper and lower connecting members in the left-right direction are provided. Component mounting structure. The fuel cell stack and the controller are connected in the front-rear direction, the fuel cell stack is located on the front side, the controller is located on the rear side, and arranged with a gap from the dash panel,
2. The component mounting structure in a motor room of an electric vehicle according to claim 1, wherein wirings connecting the fuel cell stack and the controller are connected on respective upper surfaces.   The configuration of the motor room of the electric vehicle according to claim 8, wherein the motor is installed below the fuel cell stack and the controller, and a wiring connecting the motor and the controller is wired vertically. Component mounting structure.

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