JP2008273279A - Vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that the reception operation of an antenna provided on a vehicle is adversely affected by the noise of an on-vehicle electronic apparatus. <P>SOLUTION: A vehicle has a power supply device (4), an electronic apparatus (6) used for controlling the power supply device (4), and an antenna (8) for performing at least one of the reception and the transmission of the radio signal, and at least a part of the power supply device (4) is located between the electronic apparatus (6) and the antenna (8). The electronic apparatus (6) may be arranged in a storage part 5 in which a part of a vehicle body (1a) is formed in a recessed shape. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device used for controlling a power supply device and a vehicle including an antenna for receiving a radio signal from the outside.

  Conventionally, an electric vehicle using an electric motor as a drive source and a so-called hybrid electric vehicle combining an electric motor as a drive source and another drive source have been put into practical use. In this vehicle, a battery (for example, a secondary battery such as a nickel-hydrogen battery) for supplying electric power as energy to the electric motor is mounted (for example, see Patent Documents 1 to 3).

On the other hand, some electronic devices for controlling the driving of the battery are arranged in a rear space (for example, a luggage compartment) in the vehicle. In some cases, an antenna for receiving a radio signal from the outside is disposed in a rear portion (for example, a roof) of the vehicle.
JP 2004-148850 A (paragraphs 0011 to 0013, FIG. 1, etc.) JP 2005-254974 A (FIG. 1 etc.) JP 2004-364426 A (FIG. 2 etc.)

  In the conventional configuration in which an antenna is disposed in the rear portion of the vehicle and an electronic device is disposed in the rear space, the following problems occur.

  Noise is generated from the electronic device, and when this noise reaches the antenna, there is a problem that the reception accuracy of the radio signal by the antenna is lowered. Here, the electronic device for controlling the driving of the battery is usually accommodated in the box, but in many cases, a hole is formed in the box in order to ensure the connection of the wire harness.

  In this case, the noise of the electronic device leaks from the hole formed in the box, and the noise easily reaches the antenna.

  Here, in order to prevent noise generated from the electronic device from reaching the antenna, a shield cover for shielding noise may be disposed between the electronic device and the antenna. However, when a shield cover is provided, the number of parts increases, leading to an increase in cost and increasing the number of man-hours for assembling the vehicle.

  A vehicle according to the present invention has a power supply device, an electronic device used for controlling the power supply device, and an antenna for performing at least one of reception and transmission of a radio signal, and at least a part of the power supply device is It is located between an electronic device and an antenna.

  Here, the electronic device can be arranged in a housing part in which a part of the vehicle body is formed in a concave shape. Moreover, an antenna can be arrange | positioned above the luggage compartment in a vehicle main body, and a power supply device and an electronic device can be arrange | positioned under the luggage compartment.

  Further, in the connection means for electrically connecting the power supply device and the electronic device, a plurality of connectors that can be attached to and detached from each other can be provided. Further, in the case where the electronic device includes a fan for guiding a cooling gas to the power supply device, an opening for exhausting the gas that is heat-exchanged by the power supply device and led from the fan to the outside of the vehicle body The part can be provided in the accommodating part. Here, the fan is used for temperature control of the power supply device.

  As the power supply device, a secondary battery, an electric double layer capacitor, or a fuel cell can be used. In addition, when the cooling gas exchanged by the power supply device is discharged to the outside of the vehicle main body, it can be directly discharged to the outside from the opening provided in the housing portion, or the gas from the fan can be discharged to the housing portion. On the other hand, it can also guide to the vehicle main body (side member) located in the left-right direction of a vehicle, and can discharge | emit it outside from this vehicle main body.

  According to the present invention, by arranging the power supply device so that at least a part of the power supply device is located between the electronic device and the antenna, it is possible to suppress noise generated in the electronic device from directly reaching the antenna. Can do. And it can suppress having a bad influence on the receiving operation of an antenna by the noise of an electronic device.

  Examples of the present invention will be described below.

  A vehicle that is Embodiment 1 of the present invention will be described with reference to FIG. Here, FIG. 1 is a schematic view showing a part (rear part) of the vehicle of this embodiment. The vehicle of the present embodiment is a so-called hybrid vehicle that drives an electric motor by using electric power stored in a secondary battery, which will be described later, or drives the vehicle by assisting an engine by the electric motor. .

  Note that the present invention can be applied not only to the hybrid vehicle described above but also to vehicles having other drive systems such as electric vehicles and fuel cell vehicles. Here, an electric vehicle drives a vehicle by driving an electric motor using electric power stored in a secondary battery. In addition, the fuel cell vehicle drives the vehicle by driving the electric motor using the electric power from the fuel cell, or drives the electric motor using the electric power stored in the secondary battery in addition to the electric power from the fuel cell. Or drive.

  A seat for an occupant to sit is disposed in a room (vehicle interior) provided in the vehicle 1. FIG. 1 shows a seat (so-called rear seat) 2 disposed behind the vehicle interior. Further, in the vehicle 1, a luggage compartment (so-called trunk) 3 is provided behind the seat 2 (right side in FIG. 1).

  A battery pack 4 is disposed below the luggage compartment 3. The battery pack 4 is disposed on the floor panel of the vehicle 1. The battery pack 4 includes a battery module 4a in which a plurality of single cells are electrically connected in series, and a case 4b for housing the battery module 4a. The case 4b is made of metal or the like.

  Here, a secondary battery such as a lithium ion battery, a nickel-hydrogen battery, or a nickel-cadmium battery is used as the single battery. 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 power to a device (not shown) mounted on the vehicle 1 (for example, a motor used for running the vehicle).

  Below the battery pack 4 (in the direction of gravity), a housing portion 5 (shaded portion in FIG. 1) in which a part of the vehicle body 1a is formed in a concave shape is provided. The housing portion 5 is generally used as a space portion for housing a spare tire.

  An electronic device 6 is disposed in the housing portion 5. The electronic device 6 is arranged adjacent to the battery pack 4 in the vertical direction of the vehicle 1 (vertical direction in FIG. 1), and is electrically connected to the battery pack 4 via the cable 7.

  The electronic device 6 is an electronic device used for controlling the battery pack 4. For example, the electronic device 6 includes an SMR (system main relay), a service plug, a battery monitoring unit that monitors the state of the battery pack 4, a wire harness, a converter, and a junction block. The electronic device 6 is not limited to the electronic device described above, and may be another electronic device as long as it is mounted on the vehicle 1.

  In this embodiment, since the electronic device 6 is generally disposed in the housing portion 5 used for housing the spare tire, the space in the vehicle 1 is effective when the spare tire is not mounted. Can be used. Moreover, it is only necessary to arrange the electronic device 6 with respect to the existing vehicle structure by using the accommodating portion for the spare tire.

  On the other hand, an antenna 8 for receiving a radio signal (for example, a radio wave) from the outside and transmitting a radio signal to the outside is provided on the top of the vehicle 1 (on the roof). The antenna 8 only needs to perform at least one of radio signal transmission and reception. A signal received by the antenna 8 is output to a controller (not shown) mounted in the vehicle 1 via wiring. In this embodiment, a rod antenna obtained by plating steel is used as the antenna 8, but the present invention is not limited to this. For example, the antenna 8 is a wind glass antenna in which the antenna is printed on the glass of the rear window 9. May be.

  In the present embodiment, the battery pack 4 is disposed between the antenna 8 and the electronic device 6. Specifically, the battery pack 4 is disposed on a region (virtual region) that linearly connects the electronic device 6 and the antenna 8. In other words, the electronic device 6 is covered by the battery pack 4 when the electronic device 6 side is viewed from the position of the antenna 8.

  With the configuration described above, the battery pack 4 suppresses the noise generated in the electronic device 6 from reaching the antenna 8 directly. In this way, by blocking the noise from the electronic device 6 with the battery pack 4, it is possible to suppress the antenna 8 from being adversely affected by the noise from the electronic device 6. And the receiving accuracy of the radio signal by the antenna 8 can be improved.

  In particular, in the configuration in which the antenna 8 is disposed above the luggage compartment 3 and the electronic device 6 is disposed below the luggage compartment 3 as in the vehicle 1 of the present embodiment, when the battery pack 4 is omitted, the generation occurs from the electronic device 6. Thus, the noise can easily reach the antenna 8 without being blocked by a member in the vehicle 1 (for example, a metal member that blocks noise). Therefore, by arranging the battery pack 4 as described above in the configuration of the vehicle 1 of the present embodiment, it is possible to efficiently suppress the adverse effect exerted on the antenna 8 by the noise of the electronic device 6.

  In the present embodiment, since the battery pack 4 arranged together with the electronic device 6 is used to shield noise generated from the electronic device 6, a member for shielding noise of the electronic device 6. Need not be provided separately. Thereby, the number of parts can be reduced and cost reduction can be achieved.

  Even when a window glass antenna is provided on the rear window 9, a layout similar to the above-described arrangement may be used. Further, it is only necessary that at least a part of the battery pack 4 is located between the antenna 8 and the electronic device 6, and the above-described effects can be obtained by such an arrangement.

  In the present embodiment, the electronic device 6 is arranged in the housing portion 5, but is not limited thereto. That is, as described above, it is sufficient that the battery pack 4 is positioned between the antenna 8 and the electronic device 6, and the arrangement location of the antenna 8 and the electronic device 6 is appropriately set as long as this relationship is satisfied. can do.

  Next, a vehicle that is Embodiment 2 of the present invention will be described with reference to FIG. Here, FIG. 2 is a schematic diagram illustrating a configuration of a battery pack mounted on the vehicle of the present embodiment and an electronic device electrically connected to the battery pack. In addition, the same code | symbol is used about the member etc. which are the same as the member demonstrated in Example 1. FIG.

  In addition to the configuration described in the first embodiment, the vehicle 1 according to the present embodiment includes the configuration described below.

  A cable 7 for electrically connecting the battery pack 4 and the electronic device 6 has a first cable portion 7a and a second cable portion 7b. The first cable portion 7a is electrically and mechanically connected to the battery pack 4 at one end, and has a first connector (so-called female connector) 7a1 at the other end. The second cable portion 7b is electrically and mechanically connected to the electronic device 6 at one end, and has a second connector (so-called male connector) 7b1 at the other end.

  Here, the first connector 7a1 is made of an insulating material (for example, resin) and covers the tip of the first cable portion 7a (the portion connected to the second cable portion 7b). . Similarly, the second connector 7b1 is formed of an insulating material (for example, resin) and covers the tip of the second cable portion 7b (portion connected to the first cable portion 7a). . The first and second connectors 7a1 and 7b1 can be mechanically connected (engaged) with each other, and the first and second cable portions 7a and 7b are in a conductive state in the connected state.

  In the configuration described above, when the vehicle 1 of the present embodiment receives an external force indicated by the arrow A from behind due to a collision or the like, this external force may act on the battery pack 4 or the electronic device 6. Here, since the electronic device 6 is accommodated in the accommodating part 5, it only moves slightly with respect to the direction which received the external force. That is, the movement of the electronic device 6 is restricted at a position where the electronic device 6 is in contact with the side wall 5 a of the housing portion 5.

  On the other hand, the battery pack 4 is disposed on the floor panel of the vehicle 1 and is easily moved forward of the vehicle 1 when receiving an external force indicated by an arrow A. When the external force is received, the movement amount of the battery pack 4 (movement amount in the arrow X direction) is larger than the movement amount of the electronic device 6.

  For this reason, when the battery pack 4 and the electronic device 6 are connected via one cable, there is a possibility that a part of the cable may be cut when receiving an external force. That is, as described above, since the movement amounts of the battery pack 4 and the electronic device 6 when receiving an external force are different from each other, an excessive load is applied to the cable and there is a possibility that the cable is partially cut.

  Therefore, in this embodiment, as described above, when the cable 7 having the first and second connectors 7a1 and 7b1 is used and an excessive external force is applied, as shown in FIG. The second connectors 7a1 and 7b1 are easily disconnected from each other. Thereby, it can suppress that a part of cable is cut | disconnected by excessive external force.

  In addition, since the first and second connectors 7a1, 7b1 formed of an insulating material cover the tips of the first and second cable portions 7a, 7b, the first and second cable portions 7a. , 7b are separated from each other, there is no electrical leakage or short circuit.

  In the above description, the case where an excessive external force is applied from the rear of the vehicle 1 has been described. However, when an excessive external force is applied from the side of the vehicle 1, the same effect as described above can be obtained.

  In this embodiment, the case where two connectors 7a1 and 7b1 are used has been described. However, the number of connectors can be set as appropriate. Further, a sliding mechanism for supporting the battery pack 4 and sliding the battery pack 4 in a direction in which the external force acts when receiving an excessive external force can be provided.

  Specifically, a mechanism for sliding the battery pack 4 by plastically deforming a member constituting a part of the slide mechanism can be used as the slide mechanism. According to this mechanism, when the vehicle receives an external force, the battery pack 4 can be slid while absorbing the external force, and the battery pack 4 can be prevented from moving excessively.

  Next, a vehicle that is Embodiment 3 of the present invention will be described with reference to FIG. Here, FIG. 3A is a schematic diagram when the vehicle of the present embodiment is viewed from the rear, and FIG. 3B is a schematic diagram when the vehicle as a comparative example is viewed from the rear. . In addition, the same code | symbol is used about the member etc. which are the same as the member demonstrated in Example 1. FIG.

  The vehicle 1 of the present embodiment has a configuration described below in addition to the configuration of the first embodiment or the second embodiment described above.

  In the vehicle 1 of the present embodiment shown in FIG. 3A, the air used for cooling the battery pack 4 is guided to the battery pack 4 in the housing portion 5 or the air exchanged by the battery pack 4 is supplied to the vehicle. A fan 6a for discharging the air to the outside of 1 is disposed. The fan 6a is included in the electronic device 6 described in the first and second embodiments. By disposing the fan 6a in the housing part 5 as in the present embodiment, the space in the vehicle 1 can be used efficiently.

  Note that the driving of the fan 6 a is controlled by a control circuit included in the electronic device 6. Further, in FIG. 3A, the battery pack 4 described in the first and second embodiments is omitted, but actually, the battery pack 4 is arranged above the fan 6a. Thereby, noise generated by driving the fan 6a is blocked by the battery pack 4 and can be prevented from reaching the antenna 8 directly.

  In the vehicle 1 of the present embodiment, as shown in FIG. 4, the first duct 10 a for guiding cooling air to the battery pack 4 and the air heat-exchanged by the battery pack 4 are used for the vehicle 1. And a second duct 10b for discharging to the outside. Here, the 1st duct 10a takes in the air in a vehicle interior or the luggage compartment 3. As shown in FIG. A fan 6a is disposed in a part of the second duct 10b.

  On the other hand, as shown in FIG. 3 (A), a part of the second duct 10b extends in the left direction of the vehicle 1 (left direction in FIG. 3 (A)) with respect to the fan 6a. Is connected to a discharge port 5b formed in the side wall 5a.

  In the configuration described above, when the fan 6a is driven, air in the passenger compartment or the like is guided to the battery pack 4 through the first duct 10a. When this air comes into contact with the battery module 4a in the battery pack 4, heat exchange is performed with the battery module 4a having heat by charging and discharging or the like. Thereby, the temperature rise of the battery pack 4 can be suppressed. The air heat-exchanged by the battery pack 4 moves to the second duct 10 b and is discharged to the outside of the vehicle 1 through the discharge port 5 b of the housing portion 5.

  In the configuration shown in FIG. 4, the cooling air is taken in from one end surface of the battery pack 4 and the heat-exchanged air is discharged from the other end surface (the surface facing the one end surface). It is not a thing. For example, cooling air can be taken in from one end surface of the battery pack 4 and the heat-exchanged air can be discharged from the one end surface. In other words, the cooling air intake port and the heat exchanged air discharge port can be provided in the same plane of the battery pack 4. In this embodiment, air is supplied into the battery pack 4, but a gas having a different component from the air is supplied into the battery pack 4 to cool the battery pack 4. Also good.

  Here, the fan 6a only needs to be positioned below (in the direction of gravity) the battery pack 4, but below the one end of the battery pack 4 (portion where the heat-exchanged air is discharged). Preferably it is located. That is, when the fan 6a is disposed below the center (center of gravity) of the battery pack 4, the second duct 10b must be extended from one side of the battery pack 4 to the position of the fan 6a. The shape of the second duct 10b becomes complicated. On the other hand, if the fan 6a is disposed below the one end portion of the battery pack 4, the shape of the second duct 10b can be prevented from becoming complicated.

  On the other hand, in the case where the fan 6a is disposed in the housing portion 5, it is conceivable that the heat-exchanged air is discharged from the side surface 1b of the vehicle 1 as shown in FIG. That is, it is conceivable to provide a duct 10c extending from the fan 6a to the side surface 1b.

  However, when arrange | positioning the duct 10c, as shown to FIG. 3 (B), you have to arrange | position so that the side member 11 of the vehicle 1 may be avoided. In this case, a part of the luggage compartment 3 must be projected as shown by the hatched portion in FIG. If part of the luggage compartment 3 protrudes in this manner, it is not preferable in appearance, and the storage space for luggage and the like is reduced.

  On the other hand, according to the present embodiment, the fan 6a is disposed in the housing portion 5, and the air after heat exchange is discharged from the discharge port 5b provided in the side wall 5a of the housing portion 5, so FIG. It is not necessary to project part of the luggage compartment 3 as shown in FIG. Moreover, since the length of the second duct 10b can be shortened compared to the duct 10c shown in FIG. 3B, the cost can also be reduced.

  In the present embodiment, the air after heat exchange is exhausted from the side wall 5a located in the left-right direction of the vehicle 1 with respect to the fan 6a in the accommodating portion 5, but this is not restrictive. . That is, the position where the discharge port 5b is formed in the housing portion 5 can be set as appropriate. Specifically, a discharge port can be provided in a portion (a part of the accommodating portion 5) located in any one of the front-rear direction, the left-right direction, and the lower direction of the vehicle 1 with respect to the fan 6a.

  Even in such a configuration, only a part of the second duct 10b extends from the fan 6a to a part of the accommodating portion 5, and therefore the layout of the second duct 10b can be simplified.

  In the present embodiment, the air after heat exchange is discharged from the discharge port 5b formed in the side wall 5a of the housing portion 5 to the outside of the vehicle, but is not limited thereto. Specifically, the second duct 10 b may be extended to the side member 11 positioned in the left-right direction of the vehicle 1 with respect to the housing portion 5, and air may be discharged from the side member 11.

In the vehicle which is Example 1 of this invention, it is the schematic which shows a rear part. In the vehicle which is Example 2 of this invention, it is the schematic (A, B) which shows the connection structure of a battery pack and an electronic device. It is the schematic (A) when the vehicle which is Example 3 of this invention is seen from back, and the schematic (B) when the vehicle as a comparative example is seen from back. FIG. 6 is a schematic diagram illustrating a configuration of a duct in Example 3.

Explanation of symbols

1: Vehicle 3: Luggage compartment 4: Battery pack (power supply)
5: Housing 6: Electronic device 6a: Fan 7: Cable 7a1: First connector 7b1: Second connector 8: Antenna

Claims (5)

A power supply;
An electronic device used to control the power supply device;
An antenna for performing at least one of reception and transmission of a radio signal,
A vehicle, wherein at least a part of the power supply device is located between the electronic device and the antenna.   The vehicle according to claim 1, wherein the electronic device is disposed in a housing part in which a part of the vehicle body is formed in a concave shape. The antenna is disposed above the luggage compartment in the vehicle body,
The vehicle according to claim 1, wherein the power supply device and the electronic device are disposed below the luggage compartment.   The vehicle according to any one of claims 1 to 3, comprising a plurality of connectors that can be attached to and detached from each other, and having connection means for electrically connecting the power supply device and the electronic device. The electronic device includes a fan for introducing a cooling gas to the power supply device,
The said accommodating part has an opening part for discharging | emitting the gas which was heat-exchanged with the said power supply device, and was guide | induced from the said fan to the exterior of this vehicle main body, The any one of Claim 2 to 4 characterized by the above-mentioned. Vehicle described in one.