JP2015182655A - electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vehicle capable of reducing a gap of equipment disposed between a lower surface of a floor panel and an upper surface of a battery pack.SOLUTION: An electric vehicle comprises: a floor panel 11; a battery pack 3 disposed on a lower area of the floor panel 11; a DC/AC inverter and charging appliance disposed on a front part of the battery pack 3 in a vehicle direction; a motor and charging connector installed on a rear side of the vehicle direction, being an opposite side of the DC/AC inverter and charging appliance sandwiching the battery pack 3; and an electric cable 7 for connecting the DC/AC inverter and motor on the lower area of the floor panel 11 and an electric cable 8 for connecting the charging appliance and charging connector. The electric cables 7, 8 are supported to the battery pack 3 at lower positions lower than a top surface of the battery pack 3, have connectors between them and the DC/AC inverter and charging appliance, and between them and the motor and charging connector.

Description

  The present invention relates to an electric vehicle in which a battery pack is installed in a lower area of a floor panel, and more specifically, a first electric device installed in a lower area of the floor panel and a battery pack sandwiching the first. The present invention relates to an electric vehicle in which a second electrical equipment installed on the opposite side of the electrical equipment is connected by an electrical cable.

  The floor panel, the battery pack installed in the lower area of the floor panel, the first electrical equipment arranged in the lower area of the floor panel, and installed on the opposite side of the first electrical equipment across the battery pack There is known an electric vehicle including a second electrical device and an electric cable connecting the first electrical device and the second electrical device in a lower area of the floor panel. In such an electric vehicle, an electric cable connecting the first electric equipment and the second electric equipment is supported on the lower surface of the floor panel (see, for example, Patent Document 1).

JP 2013-112003 A

However, the electric vehicle described in Patent Document 1 described above has an electric cable between the lower surface of the floor panel and the electric cable in order to install the battery pack in the lower region of the electric cable supported on the lower surface of the floor panel. It was necessary to provide a gap between the battery pack and the upper surface of the battery pack. Thereby, the space | interval of a floor panel and a battery pack has become a thing larger than the installation clearance required for mounting a battery pack on a floor panel.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric vehicle capable of setting an interval between the floor panel and the battery pack to an installation gap necessary for installing the battery pack on the floor panel. To do.

  The present invention provides a floor panel, a battery pack installed in a lower area of the floor panel, a first electrical equipment installed in a lower area of the floor panel, and the first electrical equipment across the battery pack. A second electrical equipment installed on the opposite side of the equipment, and an electrical cable connecting the first electrical equipment and the second electrical equipment in a lower area of the floor panel, the electrical cable comprising: The battery pack is supported at a position below the uppermost surface of the battery pack.

  According to the present invention, the electrical cable is supported by the battery pack at a position below the uppermost surface of the battery pack, so that the space required between the floor panel and the battery pack is required for mounting the battery pack on the floor panel. It can be a gap.

In one aspect of the present invention, the battery pack includes a tray having an upper surface opened and a battery accommodated therein, and a cover that closes the upper surface opening of the tray, and the electric cable is attached to the cover. Supported.
In this way, the length of the electric cable can be made shorter than that supported by the tray.

In one aspect of the present invention, the electric cable is supported on the lower surface of the upper wall of the cover.
In this way, since the electric cable does not touch the floor panel when installing the battery pack on the floor panel, the interference of the electric cable when installing the battery pack on the floor panel can be prevented.

In one aspect of the present invention, the electric cable is supported on the upper surface of the cover facing the floor panel.
In this way, the electric cable can be easily supported on the cover.

In one aspect of the present invention, the cover includes a holder that supports the electric cable.
In this way, the electric cable can be reliably supported by the cover.

In one aspect of the present invention, the electrical cable is provided between a first connector provided between the battery pack and the first electrical equipment, and between the battery pack and the second electrical equipment. Second connector.
If it does in this way, if a 1st connector and a 2nd connector are removed, a battery pack can be easily removed from the downward area of a floor panel, without removing an electric cable from a battery pack.

In one aspect of the present invention, the first electrical equipment is a power converter that converts DC power supplied from the battery pack into AC power, and the second electrical equipment is a motor that drives a vehicle, The power converter supplies AC power to the motor via the electric cable.
In this way, since the electric cable connecting the power converter and the motor is supported by the battery pack at a position below the uppermost surface of the battery pack, the space between the floor panel and the battery pack is reduced by the battery on the floor panel. It is possible to prevent the gap from becoming wider than the gap required for dressing the pack.

In one aspect of the present invention, the first electrical equipment is a normal charging connector provided at a normal charging port, and the second electrical equipment receives power supplied from the normal charging connector via the electrical cable. A charging device for charging the battery pack.
In this way, the electric cable connecting the normal charging connector and the charging device is supported by the battery pack at a position lower than the uppermost surface of the battery pack, so that the space between the floor panel and the battery pack is maintained at the floor panel. It is possible to prevent the gap from becoming wider than the gap required to wear the battery pack.

  As described above, according to the present invention, since the electric cable is supported on the battery pack at a position below the uppermost surface of the battery pack, the space between the floor panel and the battery pack is installed on the floor panel. It is possible to make the clearance gap necessary to do.

It is a perspective view which shows the electric vehicle which is Embodiment 1 of this invention. FIG. 2 is a schematic plan view for explaining the configuration of the electric vehicle shown in FIG. 1. It is a perspective view which shows the battery pack shown in FIG. FIG. 4 is a sectional view of the battery pack shown in FIG. 3 taken along line IV-IV. FIG. 5 is a cross-sectional view showing the main part of the cover shown in FIG. 4, showing a connection structure between an electric cable provided on the vehicle side and an electric cable supported by the cover. It is a schematic diagram which shows the electric cable which the holder shown in FIG. 4 supported. It is a front view of the holder shown in FIG. It is a schematic diagram which shows the electric cable which the holder made from sheet metal supported. It is a front view of the holder shown in FIG. It is sectional drawing which shows the battery pack which concerns on the electric vehicle which is Embodiment 2 of this invention. It is sectional drawing which shows the battery pack which concerns on the electric vehicle which is Embodiment 3 of this invention. It is sectional drawing which shows the battery pack which concerns on the electric vehicle which is Embodiment 4 of this invention.

  Exemplary embodiments of an electric vehicle according to the present invention will be described below in detail with reference to the accompanying drawings. The present invention is not limited to the embodiment.

[Embodiment 1]
FIG. 1 is a perspective view showing an electric vehicle according to an embodiment of the present invention, and FIG. 2 is a schematic plan view for explaining the configuration of the electric vehicle shown in FIG. The electric vehicle 1 according to the embodiment of the present invention charges electric power and converts the charged electric power into travel energy. The electric vehicle 1 includes a floor panel 11 (see FIG. 4). The floor panel 11 divides the living room space and its lower area, and is provided along the vehicle front-rear direction and the vehicle width direction. As shown in FIG. 1, the battery pack 2 is installed in the lower area of the floor panel 11 in the middle of the vehicle longitudinal direction. The battery pack 2 is for charging electric power supplied from the outside while supplying the charged electric power to the electric motor (motor 12). As shown in FIG. 2, the battery pack 2 is connected to a charging connector 13 provided at a quick charging port on the rear side surface of the vehicle. A quick charger (not shown) installed outside can be connected to the charging connector 13, and when the quick charger is connected to the charging connector 13 and electric power (DC) is supplied from the quick charger. The battery pack 2 is charged with electric power (direct current).

  In the electric vehicle 1 according to the embodiment of the present invention, a DC / AC inverter 14 and a charging device 15 constituting the first electric equipment are installed in front of the battery pack 2 in the vehicle. The DC / AC inverter 14 is a power converter that electrically generates (reverses) AC power from the power (DC) charged in the battery pack 2. The DC / AC inverter 14 is connected by an electric cable 7 to the motor 12 constituting the second electrical equipment installed on the rear side of the vehicle on the opposite side of the DC / AC inverter 14 with the battery pack 2 interposed therebetween. The electric power generated by the inverter 14 is supplied to the motor 12.

  The charging device 15 generates DC power having a predetermined voltage from AC power (commercial power) supplied from the outside, and charges the battery pack 2 with power. The charging device 15 is connected by an electric cable 8 to a charging connector (second electrical device) 16 provided at a normal charging port on the rear side surface of the vehicle that is opposite to the charging device 15 with the battery pack 2 interposed therebetween. A commercial power source (not shown) can be connected to the charging connector 16, and power (alternating current) is supplied to the charging device 15 when the commercial power source is connected to the charging connector 16. Then, the charging device 15 electrically generates DC power having a predetermined voltage from the supplied power (AC), and charges the battery pack 2 with the power (DC).

  3 is a perspective view showing the battery pack shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. FIG. 5 is a cross-sectional view showing the main part of the cover shown in FIG. 4, and is a diagram showing a connection structure between the electric cable provided on the vehicle side and the electric cable supported by the cover. 6 is a schematic view showing an electric cable supported by the holder shown in FIG. 4, and FIG. 7 is a front view of the holder shown in FIG.

As shown in FIGS. 3 and 4, the battery pack 2 includes a tray 3 and a cover 4, and the tray 3 and the cover 4 are joined on a horizontal plane to form one box.
As shown in FIG. 4, the tray 3 is for accommodating the battery 5 called a battery cell or a battery module, and is formed in a box shape elongated in the vehicle front-rear direction with an open upper surface (see FIG. 3). ). The tray 3 has a bottom wall 31 and an outer peripheral wall 32 formed around the bottom wall 31, and the outer peripheral wall 32 is gradually expanded from the bottom wall 31 toward the opening 34. Thereby, the outer wall surface of the side wall provided along the vehicle front-rear direction, the front wall provided along the vehicle width direction, and the outer wall surface of the rear wall form an inclined surface.

  Further, a joined portion 35 is provided around the opening 34. The joined portion 35 is provided over the entire circumference of the opening 34 at a portion to which the cover 4 is joined. The joined portion 35 is provided outside the opening 34, and a concave portion 351 into which the gasket 6 is fitted is formed on the upper surface thereof.

  As shown in FIG. 4, the cover 4 is integrally formed of resin and is formed in a box shape having substantially the same size as the tray 3. As with the tray 3, the cover 4 is formed to be elongated in the vehicle front-rear direction with the lower surface opened (see FIG. 3). Similar to the tray 3, the cover 4 has an upper wall 41 and an outer peripheral wall 42 formed around the upper wall 41, and the outer peripheral wall 42 is gradually expanded from the upper wall 41 toward the opening 44. Thereby, the wall surface of the side wall provided along the vehicle front-rear direction, the front wall 421 (see FIG. 5) provided along the vehicle width direction, and the outer wall surface of the rear wall form an inclined surface.

  A joint 45 is provided around the opening 44. The joining portion 45 is a portion that joins the tray 3 and is provided over the entire circumference of the opening 44. The joint portion 45 projects outward from the opening 44, a horizontal joint surface 451 is formed on the lower surface thereof, and an edge 452 extending upward is provided on the outer side thereof.

  Further, as shown in FIG. 5, the front wall 421 and the rear wall of the cover 4 are provided with holes 421a through which the above-described electric cables 7 and 8 are inserted. A grommet 46 is attached to the hole 421 a to protect the electric cables 7 and 8 and prevent dust and water droplets from entering the cover 4.

  Further, as shown in FIG. 6, holders 47 and 48 for supporting the electric cables 7 and 8 are provided on the lower surface of the upper wall 41 of the cover 4. The holders 47 and 48 shown in FIG. 6 are formed integrally with the upper wall 41 of the cover 4. As shown in FIG. 7, the holders 47 and 48 have openings 471 and 481 that are slightly narrower than the outer diameters of the electric cables 7 and 8, and holding portions 472 and 482 that hold the electric cables 7 and 8. Thereby, the electric cables 7 and 8 are reliably supported by the holders 47 and 48.

  As shown in FIGS. 5 and 6, the cable 7 includes a connector 71 between the AC / DC inverter 14 and a connector 72 between the motor 12. Thereby, the cable 7 can attach or detach the cable 7 supported by the cover 4 between the AC / DC inverter 14 and the motor 12. Similarly, the cable 8 includes a connector 81 between the charging device 15 and a connector 82 between the cable 8 and the charging connector 16. Thereby, the cable 8 can attach or detach the cable 8 supported by the cover 4 between the charging device 15 and the charging connector 16.

As shown in FIG. 4, the battery pack 3 is provided with a gasket 6 between the tray 3 and the cover 4. The gasket 6 is for filling a gap generated between the tray 3 and the cover 4. Specifically, the gasket 6 is fitted in a concave portion 351 formed in the bonded portion 35 of the tray 3. The gasket 6 is made of an elastic body such as rubber, and the tray 3 and the cover 4 are fastened by a battery pack well 22 provided around the tray 3 and a mounting bracket 23 fixed to the battery pack well 22. In addition, the gasket 6 is compressed and deformed, and a gap generated between the tray 3 and the cover 4 is filled.
And the battery pack 3 mentioned above is attached to the side member (not shown) which comprises a vehicle body with the attachment metal fitting 21. FIG.

FIG. 8 is a schematic diagram showing an electric cable supported by a sheet metal holder, and FIG. 9 is a front view of the holder shown in FIG.
Since the cover 4 is integrally molded with resin, the holders 47 and 48 are integrally molded on the lower surface of the upper wall 41. However, when the cover 104 is made of sheet metal, as shown in FIGS. The metal plate holders 147 and 148 are spot welded to the lower surface of the upper wall 141.

  In the electric vehicle 1 according to the first embodiment of the present invention described above, the electric cable 7 is supported by the holder 47 inside the cover 4, the connector 71 is provided between the AC / DC inverter 14, and the motor 12 is provided with a connector 72. Similarly, the electric cable 8 is supported by the holder 48 inside the cover 4, and includes a connector 81 between the charging device 15 and a connector 82 between the charging connector 16. Thereby, the space | interval of the floor panel 11 and the battery pack 3 can be made into the clearance gap required in order to equip the floor panel 11 with the battery pack 3. FIG. Further, the battery pack 3 can be removed from the lower area of the floor panel 11 by removing the connectors 71 and 81 and the connectors 72 and 82.

  Moreover, since the electric cables 7 and 8 are supported by the cover 4, the length of the electric cables 7 and 8 can be made shorter than the case where they are supported by the tray. The electric cables 7 and 8 are supported on the lower surface of the upper wall 41 of the cover 4. Therefore, when the battery pack 3 is installed on the floor panel 11, the electric cable does not touch the floor panel 11. Thereby, interference of the electric cables 7 and 8 at the time of installing a battery pack in the floor panel 11 can be prevented.

  In the electric vehicle 1 according to Embodiment 1 described above, the first electrical equipment (the DC / AC inverter 14 and the charging equipment 15) is installed in front of the battery pack 2 and the battery pack 2 is sandwiched between the first electric equipment 1 and the battery pack 2. Although the second electrical equipment (the motor 12 and the charging connector 16) is installed behind the vehicle on the opposite side of the electrical equipment, the present invention is not limited to this. For example, a first electrical measuring device is installed on one side of the battery pack 2 in the vehicle width direction, and a second electrical equipment is installed on the other side in the vehicle width direction on the opposite side of the first electrical device across the battery pack 2. It is good also as a thing.

[Embodiment 2]
FIG. 10 is a cross-sectional view showing a battery pack according to the electric vehicle according to the second embodiment of the present invention. As shown in FIG. 10, the electric vehicle according to the second embodiment of the present invention is such that holders 247 and 248 are provided on the side wall inner surface 242 of the cover 204 to support the electric cables 7 and 8.
Thus, even when the cables 7 and 8 are supported on the side wall inner surface 242 of the cover 4, the distance between the floor panel 11 and the battery pack 3 is set to the floor panel 11 as in the first embodiment of the present invention described above. It is possible to provide a necessary clearance for mounting the battery pack 3.

[Embodiment 3]
FIG. 11 is a cross-sectional view showing a battery pack according to an electric vehicle that is Embodiment 3 of the present invention. As shown in FIG. 11, the electric vehicle according to the third embodiment of the present invention is such that a recess is formed on the upper surface of a cover 304 and holders 347 and 348 are provided in the recess. Thus, the electric cables 7 and 8 are supported at a position below the uppermost surface of the cover 304 facing the floor panel 11.

Thus, even when the electric cables 7 and 8 are supported on the outer surface of the upper surface of the cover 304, the gap between the floor panel 11 and the battery pack 3 is required to equip the floor panel 11 with the battery pack 3. Can be.
Moreover, since the electric cables 7 and 8 are supported on the outer surface of the upper surface of the cover 304, the electric cables 7 and 8 can be easily supported by the cover 4.

[Embodiment 4]
FIG. 12 is a cross-sectional view showing a battery pack according to the electric vehicle according to the fourth embodiment of the present invention. As shown in FIG. 12, the electric vehicle according to the fourth embodiment of the present invention is such that communication holes 447 and 448 are provided in the upper wall 441 of the cover 404 and the electric cables 7 and 8 are passed through.

  As described above, the communication holes 447 and 448 are provided in the upper wall 441 of the cover 404, and even when the electric cables 7 and 8 are passed, the distance between the floor panel 11 and the battery pack 3 is set to the floor panel 11. It is possible to make the gap necessary for outfitting.

DESCRIPTION OF SYMBOLS 1 Electric vehicle 11 Floor panel 12 Motor 13 Charging connector 14 DC / AC inverter 15 Charging equipment 16 Charging connector 2 Battery pack 3 Tray 31 Bottom wall 32 Outer peripheral wall 34 Opening 35 Joined part 351 Recessed part 4 Cover 41 Upper wall 42 Outer peripheral wall 421 Front wall 421a Hole 44 Opening 45 Joint 451 Joint surface 452 Edge 46 Grommet 47, 48 Holder 5 Battery 6 Gasket 7, 8 Electrical cable 71 Connector

Claims (8)

Floor panels,
A battery pack installed in a lower area of the floor panel;
A first electrical equipment installed in a lower area of the floor panel;
A second electrical equipment installed on the opposite side of the first electrical equipment across the battery pack;
An electrical cable connecting the first electrical equipment and the second electrical equipment in a lower region of the floor panel;
With
The electric vehicle is supported by the battery pack at a position below the uppermost surface of the battery pack. The battery pack is configured to include a tray that has an upper surface opened and accommodates a battery, and a cover that closes the upper surface opening of the tray.
The electric vehicle according to claim 1, wherein the electric cable is supported by the cover.   The electric vehicle according to claim 2, wherein the electric cable is supported on a lower surface of an upper wall of the cover.   The electric vehicle according to claim 2, wherein the electric cable is supported on an upper surface of the cover facing the floor panel.   The electric vehicle according to claim 2, wherein the cover includes a holder that supports the electric cable.   The electrical cable includes a first connector provided between the battery pack and the first electrical equipment, and a second connector provided between the battery pack and the second electrical equipment. The electric vehicle according to any one of claims 1 to 5, wherein   The first electrical equipment is a power converter that converts DC power supplied from the battery pack into AC power, the second electrical equipment is a motor that drives a vehicle, and the power converter is The electric vehicle according to any one of claims 1 to 6, wherein AC power is supplied to the motor via an electric cable.   The first electrical device is a normal charging connector provided at a normal charging port, and the second electrical device is charged to charge the battery pack with power supplied from the normal charging connector via the electric cable. It is an apparatus, The electric vehicle as described in any one of Claims 1-6 characterized by the above-mentioned.

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