JP2008279825A - Power supply mounting structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply mounting structure of a vehicle capable of ensuring a space for storing a battery for auxiliary unit when arranging the battery for auxiliary unit in an engine room or a baggage compartment. <P>SOLUTION: This power supply mounting structure of the vehicle has a first power supply device 60 for supplying electric power into the auxiliary unit 74 mounted on the vehicle, second power supply devices 50, 50a for outputting electric power having voltage values being different from those of the first power supply device, and console boxes 40, 41, 42 for storing the first and second power supply devices. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power supply mounting structure for a vehicle including first and second power supply devices that output power having different voltage values.

  In recent years, an electric vehicle using an electric motor as a drive source and a so-called hybrid electric vehicle in which an electric motor and another drive source (for example, an internal heat engine or a fuel cell) are combined as a drive source have been put into practical use. Some vehicles have a battery pack and a fuel cell stack arranged in a console box (see, for example, Patent Documents 1 and 2).

On the other hand, in a hybrid electric vehicle, an auxiliary battery (for example, a lead storage battery) for supplying electric power to an auxiliary machine (lamp, wiper motor, power window motor, etc.) mounted on the vehicle is mounted. And the battery for auxiliary machines is arrange | positioned in an engine room or a luggage compartment.
Japanese Patent Laying-Open No. 2006-278201 (FIGS. 4, 6, 7, etc.) JP 2007-15588 A (FIGS. 1, 7, etc.)

  However, when the auxiliary battery is disposed in the engine room, a space for storing the auxiliary battery must be secured in the engine room. In particular, in a hybrid electric vehicle, since an engine, an inverter, a motor, and the like are arranged in an engine room, it is difficult to secure a storage space for auxiliary battery. Further, if it is attempted to secure a storage space for the auxiliary battery, the engine room will be enlarged.

  On the other hand, when the auxiliary battery is disposed in the luggage compartment, a space for accommodating the auxiliary battery in the luggage compartment must be secured. In this case, in order to secure the storage space for the auxiliary battery, the luggage compartment space (storage space for luggage, etc.) becomes narrow.

  A power supply mounting structure for a vehicle according to the present invention includes a first power supply device for supplying power to an auxiliary machine mounted on the vehicle, and a second power output device having a voltage value different from that of the first power supply device. And a console box that houses the first and second power supply devices.

  Here, the first power supply device can be arranged above the vehicle with respect to the second power supply device. A support mechanism for supporting the first power supply device in the console box can be provided.

  As a support mechanism, it can be comprised with the supporting member which supports a 1st power supply device, and the holding member which is provided in the inner wall of a console box and hold | maintains a supporting member. In addition, the support mechanism may be configured by a support member that supports the first power supply device, and a fixing member that is coupled to the support member and fixed to the second power supply device.

  On the other hand, in addition to the first and second power supply devices, other devices can be accommodated in the console box. Here, as another device, a DC / DC converter connected to at least one of the first and second power supply devices can be accommodated in the console box.

  According to the present invention, in a vehicle provided with the first and second power supply devices, by housing these power supply devices in the console box, in other parts of the vehicle (for example, the engine room and the luggage compartment) There is no need to provide a space for accommodating the first and second power supply devices (particularly, the first power supply device). Thereby, space, such as an engine room and a luggage compartment, can be used efficiently.

  Examples of the present invention will be described below.

  A vehicle power supply mounting structure that is Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is an external perspective view showing the interior of the vehicle, and mainly shows the peripheral structure of the front seat. FIG. 2 is an exploded perspective view showing a configuration inside the console box.

  A driver's seat 11 and a passenger seat 12 are disposed as a front seat in the vehicle interior 1. Here, depending on the type of the vehicle, the rear seat is arranged behind the vehicle with respect to the front seat. A dashboard 20 is disposed in front of the vehicle with respect to the driver seat 11 and the passenger seat 12, and a steering wheel is disposed in front of the driver seat 11.

  The driver's seat 11 and the passenger seat 12 are respectively fixed to the vehicle floor panel via a pair of seat legs 31 and 32. The seat legs 31 and 32 are usually covered with a foot cover (not shown). The seat legs 31 and 32 are provided with a slide mechanism (not shown) for sliding the driver's seat 11 and the passenger seat 12 in the front-rear direction of the vehicle.

  A console box 40 is disposed between the driver seat 11 and the passenger seat 12. A slit 40 a for taking in the air in the room 1 into the console box 40 is provided at the lower part of the console box 40. The air taken into the console box 40 is used for cooling the battery pack disposed in the console box 40 as will be described later.

  As shown in FIG. 2, the console box 40 includes a lid member 41 and a housing member 42. A plurality of ribs formed in a plate shape on the side walls 42a and 42b facing each other in the X direction (corresponding to the left and right direction of the vehicle) of the housing member 42 and extending in the Z direction (corresponding to the vertical direction of the vehicle). (Holding member) 42c is provided. Each of the side walls 42a and 42b is provided with a plurality (three) of ribs 42c at a predetermined interval in the Y direction (corresponding to the longitudinal direction of the vehicle). Note that the X direction, the Y direction, and the Z direction shown in FIG. 2 are directions orthogonal to each other.

  The length in the Z direction of each rib 42c is shorter than the length in the Z direction of each side wall part 42a, 42b. This is to provide a space for housing the auxiliary battery 60 in the housing member 42 as will be described later. Here, the rib 42c may be formed separately and then fixed to the side wall portions 42a and 42b of the housing member 42 by welding or the like, or may be formed integrally with the side wall portions 42a and 42b. The number of ribs 42c can be set as appropriate.

  A battery pack (second power supply device) 50 is disposed between the rib 42c of the side wall 42a and the rib 42c of the side wall 42b. The battery pack 50 includes a battery module 50a in which a plurality of single cells are electrically connected in series, and a case 50b for housing the battery module 50a. The battery pack 50 is fixed to a vehicle floor panel by a fastening member (not shown) such as a bolt. Here, the arrangement of the battery module 50a in the case 50b can be set as appropriate.

  Secondary cells such as a lithium ion battery, a nickel-hydrogen battery, and a nickel-cadmium battery are used as the single battery constituting the battery module 50a. An electric double layer capacitor (so-called capacitor) or a fuel cell can be used instead of the secondary battery. The secondary battery or the like serves as a power source for supplying electric power to a device (not shown) mounted on the vehicle (for example, a motor used for running the vehicle).

  In this embodiment, as shown in FIG. 3, the battery pack 50 (battery module 50 a) is connected to a boosting DC / DC converter 71. The DC / DC converter 71 boosts the output of the battery pack 50 to a predetermined voltage (for example, the rated voltage of the inverter 72 and the traveling motor 73) and outputs the boosted voltage to the inverter 72 and the traveling motor 73 disposed in the engine room. . In this embodiment, the battery module 50a can output a voltage of 200V.

  On the other hand, although not shown, a duct is connected to the battery pack 50 (case 50b), and a fan is disposed in a part of the duct. Then, by driving the fan, the air in the room 1 is guided into the console box 40 through the slit 40 a of the console box 40 and comes into contact with the battery module 50 a in the battery pack 50. Thereby, even if the battery module 50a generates heat due to charging / discharging or the like, the battery module 50a is cooled by bringing the air in the room 1 (air having a temperature lower than the temperature of the battery module 50a) into contact with the battery module 50a. be able to.

  An auxiliary battery (first power supply device) 60 is arranged above the battery pack 50. The auxiliary battery 60 has output terminals 60a and 60b, and is connected to an auxiliary machine 74 (see FIG. 3) mounted on the vehicle via a wiring (not shown). As a result, the electric power of the auxiliary battery 60 is supplied to the auxiliary machine 74. Here, examples of the auxiliary machine 74 include a lamp, a wiper motor, a power window motor, and an electric steering motor, but are not limited thereto. In this embodiment, the auxiliary battery 60 can output a voltage of 12V. Further, as the auxiliary battery 60, a lead storage battery can be used.

  As shown in FIG. 3, the auxiliary battery 60 is connected to the battery pack 50 via a DC / DC converter 75. Here, the DC / DC converter 75 converts the output voltage of the battery pack 50 into a voltage corresponding to the auxiliary battery 60 and outputs the converted voltage to the auxiliary battery 60. Thereby, the battery 60 for auxiliary machines can be charged. On the other hand, the battery pack 50, the DC / DC converters 71 and 75, the inverter 72 and the traveling motor 73 are controlled by the controller 76.

  In FIG. 2, the auxiliary battery 60 is disposed on the upper surface 61 a of a support plate (support member) 61 and is fixed to the support plate 61 by a fixing mechanism 62. The fixing mechanism 62 includes a pressing member 62a that contacts the upper surface of the auxiliary battery 60, and a bolt member 62b that is fastened to the support plate 61 and the pressing member 62a at both ends.

  The lower surface 61b (surface facing the upper surface 61a) of the support plate 61 contacts the end of the rib 42c. That is, the auxiliary battery 60 is accommodated in the accommodating member 42 by the support plate 61 coming into contact with the rib 42 c. Here, the outer edge of the support plate 61 is positioned in the XY plane by contacting the inner wall surface of the housing member 42.

  In addition, since the length of the rib 42c in the Z direction is longer than the length of the battery pack 50 in the Z direction, the lower surface 61b of the support plate 61 does not contact the upper surface of the battery pack 50. In other words, a space is formed between the support plate 61 and the battery pack 50.

  With this configuration, it is possible to make it difficult for the heat generated in the battery pack 50 to reach the auxiliary battery 60 or to make it difficult for the heat generated in the auxiliary battery 60 to reach the battery pack 50. . Moreover, if the support plate 61 is formed of a material having heat insulation properties, heat transfer between the battery pack 50 and the auxiliary battery 60 can be suppressed.

  Further, since the battery pack 50 and the auxiliary battery 60 are arranged in the console box 40, if the air in the room 1 is introduced into the console box 40 as described above, the battery pack 50 and the auxiliary battery 60 are installed. Can be cooled together.

  In a state where the battery pack 50 and the auxiliary battery 60 are housed in the housing member 42, the lid member 41 is fixed to the housing member 42. Here, the lid member 41 includes first and second constituent members 41a and 41b, and the second constituent member 41b is rotatable with respect to the first constituent member 41a. The first component member 41a has a recess 41a1 inside thereof. Here, in the state shown in FIG. 2, if the second component member 41b is rotated, the concave portion 41a1 provided in the first component member 41a can be opened, and this concave portion 41a1 is used as an article storage space. Can be used.

  According to the present embodiment, since not only the battery pack 50 but also the auxiliary battery 60 is accommodated in the console box 40, it is not necessary to arrange the auxiliary battery 60 in another space in the vehicle. That is, the engine room can be saved in space compared to a conventional vehicle in which the auxiliary battery 60 is disposed in the engine room. Further, the space of the luggage compartment can be widened as compared with a conventional vehicle in which the auxiliary battery 60 is disposed in the luggage compartment.

  Further, in this embodiment, since the auxiliary battery 60 is disposed above the battery pack 50, the auxiliary battery 60 can be easily replaced simply by removing the lid member 41. Normally, the life of the auxiliary battery 60 is shorter than the life of the battery pack 50, so it is often necessary to replace the auxiliary battery 60. Therefore, by configuring as in the present embodiment, it is possible to easily replace the auxiliary battery 60.

  In the present embodiment, the ribs 42c are provided on the side wall portions 42a and 42b facing each other in the X direction, but the positions where the ribs 42c are provided can be set as appropriate. That is, it is only necessary that the support plate 61 to which the auxiliary battery 60 is attached can be held by the rib 42c, and any one of the four side walls (including the side walls 42a and 42b) constituting the housing member 42 is included. The rib 42c may be provided on the surface. Also in this case, the battery pack 50 is arranged in a space other than the space where the rib 42c is provided.

  In this embodiment, the rib 42c extending in the Z direction is used. However, if the support plate 61 to which the auxiliary battery 60 is attached can be supported, a plate-like rib extending in the XY plane is used. It can also be used. That is, plate-shaped ribs extending in the XY plane can be provided at predetermined positions in the Z direction on the side walls 42a and 42b. Further, a plate-like rib extending in the XY plane and the rib 42c (rib extending in the Z direction) described in this embodiment can be used in combination.

  Furthermore, the rib 42c in the present embodiment is formed in a substantially rectangular shape when viewed from the Y direction, but is not limited to this shape. In other words, any shape that can support the support plate 61 to which the auxiliary battery 60 is attached can be used. For example, the shape when viewed from the Y direction can be triangular. In this case, the support plate 61 is supported by one side of the triangle shape.

  Next, a power supply mounting structure for a vehicle that is Embodiment 2 of the present invention will be described with reference to FIG. Here, FIG. 4 is an external perspective view showing a partial configuration in the console box in the present embodiment. Hereinafter, differences from the first embodiment will be described. In addition, the same code | symbol is used about the member same as the member demonstrated in Example 1. FIG.

  In the present embodiment, the configuration of the housing member 42 is changed. In the first embodiment, the side wall portions 42a and 42b are provided with plate-like ribs 42c. However, in this embodiment, the side wall portions 42a and 42b have a substantially U-shaped cross section (cross section in the XY plane). The holding member 42d is provided. Also in the present embodiment, the battery pack 50 is disposed between the holding member 42d provided on the side wall portion 42a and the holding member 42d provided on the side wall portion 42b.

  By using the holding member 42d described above, it is possible to improve the strength when holding the support plate 61 to which the auxiliary battery 60 is attached. Also in this embodiment, the same effect as that of Embodiment 1 can be obtained.

  In the present embodiment, the case where the holding member 42d having a substantially U-shaped cross section is used has been described. However, the cross-sectional shape of the holding member 42d is not limited thereto. That is, it is only necessary to be able to hold the support plate 61 to which the auxiliary battery 60 is attached. For example, the cross-sectional shape in the XY plane may have a curvature or is formed in a polygonal shape. May be.

  In the present embodiment, the holding member 42d is provided on the side wall portions 42a and 42b facing each other in the X direction, but the position where the holding member 42d is provided can be set as appropriate. That is, the holding member 42d may be provided on any one of the four side wall parts (including the side wall parts 42a and 42b) constituting the housing member 42. Furthermore, the number of holding members 42d provided on the side wall portions 42a and 42b can be set as appropriate.

  Next, a power supply mounting structure for a vehicle that is Embodiment 3 of the present invention will be described with reference to FIG. Here, FIG. 5 is an external perspective view showing the configuration inside the console box in the vehicle of the present embodiment. Hereinafter, differences from the first embodiment will be described. In addition, the same code | symbol is used about the member same as the member demonstrated in Example 1. FIG.

  In this embodiment, the mounting structure of the support plate 61 that supports the auxiliary battery 60 is changed. A plurality of leg members (fixing members) 63 extending in the Z direction are fixed to the lower surface 61 b of the support plate 61. Here, the length of the leg member 63 in the Z direction is longer than the length of the battery pack 50 in the Z direction, so that the lower surface 61 b of the support plate 61 does not contact the upper surface of the battery pack 50. . Further, the distal end portion of the leg member 63 is located in the same plane as the lower surface of the battery pack 50.

  Each leg member 63 is provided with a fixing portion 63a for fixing the leg member 63 to the outer surface of the battery pack 50 (case 50b). That is, the leg member 63 is fixed to the battery pack 50 by fastening a fastening member such as a bolt to the battery pack 50 through the opening of the fixing portion 63a. As a result, the support plate 61 is also fixed to the battery pack 50.

  The battery pack 50 and the auxiliary battery 60 configured as shown in FIG. 5 are housed in the housing member 42 as in the first embodiment. Here, the accommodating member 42 is not provided with the rib 42c described in the first embodiment, and is configured to only cover the battery pack 50 and the auxiliary battery 60.

  According to the present embodiment, the battery pack 50 and the auxiliary battery 60 can be housed in the console box 40 after being assembled as one unit. Thereby, compared with the case where each of the battery pack 50 and the auxiliary battery 60 is accommodated in the console box 40, the assembling work can be easily performed. Also in this embodiment, the same effect as that of Embodiment 1 can be obtained.

  Here, in the first to third embodiments described above, the case where the auxiliary battery 60 is housed in the console box 40 in addition to the battery pack 50 has been described, but devices other than the auxiliary battery 60 are also housed. be able to. For example, at least one of the DC / DC converters 71 and 75 described in FIG. 3 can be arranged in the console box 40. In addition to the DC / DC converter, an SMR (system main relay), a service plug, a battery monitoring unit that monitors the state of the battery pack 50, a wire harness, or a junction block may be arranged.

  When devices other than the auxiliary battery 60 described above are also housed in the console box 40, they can be arranged side by side with the auxiliary battery 60 in the X direction or the Y direction, or the auxiliary battery 60 in the Z direction. Can also be placed side by side. In this case, devices other than the auxiliary battery 60 are fixed in the console box 40.

  On the other hand, the structure (support mechanism) for supporting the auxiliary battery 60 in the console box 40 is not limited to the structure described in the first to third embodiments. That is, it is only necessary that the auxiliary battery 60 can be supported at a predetermined position in the console box 40. For example, the support plate 61 to which the auxiliary battery 60 is attached can be supported in a state of being suspended by the lid member 41. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing an interior (part) of a vehicle that is Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view illustrating a configuration inside a console box according to the first embodiment. 1 is a diagram illustrating a circuit configuration in a vehicle of Example 1. FIG. It is an external appearance perspective view which shows a part of structure in the console box in Example 2 of this invention. It is an external appearance perspective view which shows the structure in the console box in Example 3 of this invention.

Explanation of symbols

40: Console box 41: Lid member 42: Housing member 42c: Rib 50: Battery pack (second power supply device)
60: Auxiliary battery (first power supply)
61: Support plate

Claims (5)

A first power supply for supplying power to an auxiliary machine mounted on the vehicle;
A second power supply device that outputs power having a voltage value different from that of the first power supply device;
A power supply mounting structure for a vehicle, comprising: a console box that houses the first and second power supply devices.   2. The vehicle power supply mounting structure according to claim 1, wherein the first power supply device is disposed above the vehicle with respect to the second power supply device.   The vehicle power supply mounting structure according to claim 1, further comprising a support mechanism for supporting the first power supply device in the console box. The support mechanism is
A support member for supporting the first power supply device;
The vehicle power supply mounting structure according to claim 3, further comprising a holding member that is provided on an inner wall of the console box and holds the support member. The support mechanism is
A support member for supporting the first power supply device;
The vehicle power supply mounting structure according to claim 3, further comprising a fixing member connected to the support member and fixed to the second power supply device.