JP5690055B2 - Electric vehicle component mounting structure - Google Patents

Description

  The present invention relates to a component mounting structure for an electric vehicle.

  2. Description of the Related Art Conventionally, an electric vehicle in which low voltage power is boosted by a charger and charged to a battery is known (Patent Document 1).

JP 2007-269249 A

  If the low voltage power is boosted and charged as in the above prior art, it takes time to complete the charging. Therefore, if it is configured so that high voltage power can be charged, the time until charging is completed can be shortened. In that case, the power supply path and the layout of the electrical components must be set appropriately. There is a risk that power loss increases.

  Thus, the present invention provides an electric vehicle component mounting structure that can supply low-voltage power and high-voltage power and that can suppress power loss when charging high-voltage power. Objective.

In the present invention, the connector portion including the low voltage charging port and the high voltage charging port, the first high voltage harness routed toward the charger, and the first voltage routed toward the high voltage charging port. A circuit box having a junction for electrically connecting the second high-voltage harness and a third high-voltage harness routed toward the battery assembly, and the battery assembly is arranged in the vehicle longitudinal direction. disposed in the center portion, by the charger is configured to be placed on the vehicle rear, arranged as close to the connector portion than charger circuitry box, and the circuit box than charger battery assembly The most important feature is that it is placed close to.

According to the present invention, the second high voltage harness is shortened by bringing the connector portion and the circuit box closer , and the third high voltage harness is shortened by bringing the circuit box and the battery assembly closer. And it becomes easy to suppress the power loss at the time of charging high voltage electric power via these 2nd high voltage harnesses and the 3rd high voltage harness .

FIG. 1 is a side view (partially sectional view) showing a schematic configuration of a component mounting structure for an electric vehicle according to an embodiment of the present invention. FIG. 2 is a plan view seen from above showing a schematic configuration of a component mounting structure for an electric vehicle according to an embodiment of the present invention. FIG. 3 is a side view of the front part of the electric vehicle component mounting structure according to the embodiment of the present invention. FIG. 4 is a perspective view of the front vehicle body of the electric vehicle component mounting structure according to the embodiment of the present invention. FIG. 5 is an explanatory diagram showing an outline of the circuit configuration of the electric component of the electric vehicle component mounting structure according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side of the vehicle, and WD indicates the vehicle width direction.

  In the vehicle 1 according to the present embodiment, the front wheels Wf are driven by a vehicle driving electric motor 3M mounted on the front portion of the vehicle body 2. As shown in FIGS. 1 and 2, etc., the vehicle body 2 includes an electric motor 3M, an inverter 4, a circuit box 5, a charger 6, a battery assembly 7, an air conditioning system as electric parts having a relatively heavy weight. A PTC heater 25 (see FIG. 5) used in the air conditioning system, an electric compressor 26 (see FIG. 5) used in the air conditioning system, and the like are mounted. In the present embodiment, among these, the electric motor 3M, the inverter 4, the circuit box 5, the PTC heater 25, and the electric compressor 26 are arranged at the front part in the vehicle front-rear direction, and the battery assembly 7 is the center part in the vehicle front-rear direction. The charger 6 is arranged at the rear part in the vehicle front-rear direction. As described above, by arranging a plurality of electrical components appropriately dispersed in the vehicle front-rear direction, the weight balance in the front-rear direction of the vehicle 1 can be easily achieved.

  As shown in FIGS. 3 and 4, a front compartment 8 is formed in the front portion of the vehicle 1. The front compartment 8 is a space surrounded by a rear dash panel 9, fender panels (not shown) on both sides in the vehicle width direction, a front bumper 10a, a grill 10b, and the like. The hood 10c is closed so that it can be opened and closed. In the front compartment 8, various components such as a power unit 3 in which an electric motor 3M for driving a vehicle and a reduction gear 3R are integrated, an inverter 4, a circuit box 5, and a PTC heater 25 are accommodated.

  As shown in FIG. 4, front side members 11 extending substantially in the front-rear direction are extended on both sides in the vehicle width direction of the front compartment 8, and in the front-rear direction on both sides in the vehicle width direction above the front side member 11. A generally extending hood ridge member 12 is extended. Further, between the left and right front side members 11, cross members 13 </ b> F and 13 </ b> R substantially extending in the vehicle width direction are provided with a space in the front and rear direction. Sub members 13a and 13b are attached to these two cross members 13F and 13R, and various components such as the reinforcement of the cross members 13F and 13R, the inverter 4, the circuit box 5, the PTC heater 25, and the electric compressor 26 are provided. It is used for installation. In the present embodiment, the front side member 11, the hood ridge member 12, the cross members 13F and 13R, the sub members 13a and 13b, and the like correspond to the vehicle body skeleton member (vehicle body 2) at the front portion of the vehicle 1. Note that fasteners such as bolts and nuts, brackets, and the like are appropriately used when attaching the electrical components to the vehicle body 2.

  In this embodiment, a charging port 15 is provided at the front portion of the vehicle 1 (front end portion in this embodiment) as a connector portion for inserting the plug 14a (see FIG. 5) of the power supply cord 14 that supplies power from the outside. It has been. The front of the charging port 15 is covered with a movable lid (not shown) formed on at least a part of the grill 10b. When charging, the movable lid is opened and the charging port 15 is directed forward. It can be exposed. A harness 16 is connected to the charging port 15, and the battery assembly 7 (a plurality of batteries 7 b accommodated in the battery assembly 7) is connected from the power supply cord 14 through the plug 14 a, the charging port 15, the harness 16, the charger 6, and the like. Electric power is supplied.

  Further, as shown in FIG. 5 and the like, the charging port 15 includes a low voltage charging port 15L for charging with a relatively low voltage (for example, 100V, 200V, etc.) and a high voltage charging for charging with a high voltage (for example, 500V, for example). Ports 15H are provided, and the harness 16 is connected to each of the charging ports 15. The low voltage power supplied from the low voltage power supply cord 14L to the low voltage charging port 15L is converted into a high voltage by the charger 6 including a transformer (not shown) for converting the low voltage into the high voltage, and the circuit box 5 ( It is supplied to the battery 7b in the battery assembly 7 via the inner conductor portion 24b). The high voltage power supplied from the high voltage power supply cord 14H to the high voltage charging port 15H is supplied to the battery 7b in the battery assembly 7 through the circuit box 5 (inner conductor portion 24b). By providing the high voltage charging port 15H, charging can be completed more rapidly. In addition to the transformer, the charger 6 is also equipped with a rectifier circuit, a filter, and the like that convert alternating current into direct current.

  As shown in FIG. 5, the circuit box 5 includes a conductor portion 24b such as a bus bar to which a high voltage is applied, in a housing 5e. Conductor portions 24a (for example, core wires, terminals, etc.) of the plurality of harnesses 16 (16a, 16c, 16d, 16e, etc.) are electrically connected to the conductor portions 24b. That is, the conductor portion 24b of the circuit box 5 serves as a junction (junction point) of the conductor portions 24a of the plurality of harnesses 16. In this sense, the circuit box 5 includes a junction box (junction box, junction point). Box). The high voltage harness 16 connected to the circuit box 5 includes a harness 16a (first high voltage harness) routed toward the charger 6 and a harness 16c routed toward the high voltage charge port 15H. (Second high voltage harness), a harness 16d routed toward the battery assembly 7 (third high voltage harness), a harness 16e routed toward the inverter 4, and the like. In the present embodiment, a DC / DC converter 5a, a fuse 5b, a voltmeter 5c, relays 5d, 5da, and the like are also accommodated in the housing 5e of the circuit box 5. The electric power converted into a low voltage by the DC / DC converter 5a is supplied to a battery (low voltage battery) 27 (see FIG. 5) and the like.

  As shown in FIG. 1, the battery assembly 7 is configured such that a plurality of batteries (high voltage batteries) 7b are mounted on a frame 7a formed in a rectangular frame shape or a ladder shape and covered with a cover 7c. . Further, as shown in FIG. 5, in addition to the harness 16, a contactor 7d, a switch box 7e, a battery controller 7f, and the like are accommodated in the battery assembly 7. The battery assembly 7 can be detachably attached to a vehicle body skeleton member (a side member 18, a side sill 19, a cross member (not shown), etc.) from below under a floor panel 17 at the center in the front-rear direction of the vehicle 1. It is attached.

  Moreover, the charger 6 is arrange | positioned on the floor panel 17 of the rear part (back from the vehicle interior 1a and the battery assembly 7) of the vehicle 1, as shown in FIG.1, FIG.2, etc. FIG. In the present embodiment, a vehicle body skeleton such as a cross member 21 installed between the rear side members 20 and extending substantially along the vehicle width direction, or a cross bar 23 installed between the rear wheel houses 22 and extending substantially along the vehicle width direction. It is fixed to the member (vehicle body 2) directly or via a bracket.

  FIG. 5 schematically shows a circuit configuration of the vehicle 1 (electric vehicle) according to the present embodiment. In the drawing, the conductor portion 24 to which a high voltage is applied is indicated by a solid line, and the conductor portion 24 to which a low voltage is applied is indicated by a broken line. The thickness of the line corresponds to the cross-sectional area of the conductor portion 24, and the thicker the line, the larger the cross-sectional area of the conductor portion 24. Further, in the figure, a two-dot chain line A indicates a region where a high voltage is applied during the operation of the power unit 3 (when the vehicle 1 is traveling).

  As can be seen from FIG. 5, in the present embodiment, the high-voltage components to which a high voltage is applied include the electric motor 3M, the inverter 4, the circuit box 5, the charger 6, the battery assembly 7, the PTC heater 25, the electric compressor 26, and the like. However, in this embodiment, as shown in FIG. 1, among these high-power components, the charger 6 is disposed at the rear portion of the vehicle 1 (behind the vehicle center of gravity Cg in the front-rear direction), and the battery assembly 7. Are arranged at the center in the front-rear direction of the vehicle 1, and other high-power components (that is, the electric motor 3M, the inverter 4, the circuit box 5, the PTC heater 25, and the electric compressor 26) are arranged at the front of the vehicle 1 (vehicle center of gravity Cg). It is arranged more forward).

  In this way, the charger 6 is arranged behind the vehicle center of gravity Cg, and the high-power components different from the charger 6 (in this embodiment, the electric motor 3M, the inverter 4, the circuit box 5, the PTC heater 25, and By disposing the electric compressor 26) in front of the vehicle center of gravity Cg, compared to the case where the charger 6 and the high-power components are collectively disposed forward or rearward with respect to the vehicle center of gravity Cg, It becomes easy to balance weight.

  In addition, the battery assembly 7 is sandwiched between the charger 6 and a high-power component different from the charger 6 (in this embodiment, the electric motor 3M, the inverter 4, the circuit box 5, the PTC heater 25, and the electric compressor 26). As a result, it is easier to balance the weight of the vehicle 1 in the front-rear direction than in the case where the charger 6 and the high-power components are arranged in front or rear with respect to the battery assembly 7. Further, since the battery assembly 7 is relatively heavy, the layout is such that the battery assembly 7 is disposed at the front or rear portion of the vehicle 1 because the battery assembly 7 is disposed at the center in the front-rear direction of the vehicle 1. It can be said that it becomes easier to balance the weight of the vehicle 1 before and after the case.

  When charging is performed via the low voltage power supply cord 14L and the low voltage charging port 15L, the charger 6 and the harness 16a (first high voltage harness) and the harness 16b (low voltage harness) connected to the charger 6 are compared. Current with a low current value flows. For this reason, the cross-sectional areas of the conductor portions 24 of these harnesses 16a and 16b are the harness 16c (second high voltage harness) connected to the high voltage charging port 15H and the harness 16d (third high voltage harness) connected to the battery assembly 7. The cross-sectional area of the conductor portion 24 is made smaller. That is, the harnesses 16a and 16b can be made thinner than the harnesses 16c and 16d.

  In this embodiment, as can be seen from FIGS. 1, 2, etc., the low voltage charging port 15 </ b> L (charging port 15) is disposed at the front of the vehicle 1, while the charger 6 is disposed at the rear of the vehicle 1. Therefore, the harness 16b that connects them becomes relatively long. Further, in the present embodiment, one end of the harness 16a is guided into the circuit box 5 in the front compartment 8, and the high voltage power generated in the charger 6 is supplied to the harness 16a, the circuit box 5, and the circuit box 5 and the battery. The battery assembly 7 is configured to supply the battery assembly 7 via a harness 16d with the assembly 7. For this reason, the harness 16a is also routed between the front portion and the rear portion of the vehicle 1 and becomes relatively long.

  However, since the harnesses 16a and 16b can be made thinner than the other harnesses 16 (the harnesses 16c and 16d and the harnesses 16e connected to the inverter 4) as described above, when wiring a thick harness, In comparison, even if the charger 6 and the charging port 15 are spaced apart from each other in the front and rear of the vehicle 1, the weight of the harness 16 b can be suppressed, and the charger 6 and the circuit box 5 can be connected to the vehicle 1. Even if they are arranged apart from each other in the front-rear direction, an increase in the weight of the harness 16a and, consequently, an increase in the weight of the vehicle 1 can be suppressed. Also, the installation work of the harnesses 16a and 16b can be performed relatively easily.

  Moreover, if the high voltage harness 16a (first high voltage harness) connected to the charger 6 is directly connected to the battery assembly 7 without going through the circuit box 5, the length of the harness 16a will be described. However, in such a configuration, there are two conductive paths between the high-voltage component fixed to the vehicle body 2 and the battery assembly 7 attached to and detached from the vehicle body 2. Compared with, it becomes difficult to align the contact portion. In this respect, in the present embodiment, since the power from the charger 6 is supplied to the battery assembly 7 via the harness 16a, the circuit box 5, and the harness 16d, the high-power component fixed to the vehicle body 2 (this embodiment) In the embodiment, the conductive path between the circuit box 5) and the battery assembly 7 attached to and detached from the vehicle body 2 can be only one system, and the configuration of the contact portion of the conductive path can be simplified and contact can be made. The alignment of the parts becomes easier.

  In this embodiment, as can be seen from FIGS. 1, 2, etc., the circuit box 5 is arranged closer to the charging port 15 than the charger 6. Therefore, the harness 16c (second high-voltage harness, see FIG. 5) connecting the high-voltage charging port 15H and the circuit box 5 is further shortened, and the high-voltage charging port 15H is connected to the circuit box 5 via the harness 16c and the circuit box 5. It becomes easy to suppress power loss when supplying voltage power. As described above, since the current value when power is supplied from the low voltage charging port 15L via the harness 16b, the charger 6, the harness 16a, and the circuit box 5 is relatively low, the charging port 15 and the charger 6 Even if they are arranged apart from each other, the power loss is unlikely to become so large. On the other hand, since the current value when the high voltage power is supplied from the high voltage charging port 15H via the harness 16c and the circuit box 5 is relatively high, it is preferable to reduce the electric resistance by reducing the electric resistance. Therefore, it is preferable to reduce the electrical resistance by shortening the harness 16c. And if the harness 16c is shortened, even if the conductor portion 24 inside the harness 16c is made thicker to further reduce the electrical resistance, an increase in the weight of the entire harness 16c can be suppressed. There is an advantage that the harness 16c can be suppressed and the installation work of the harness 16c becomes relatively easy. Moreover, in this structure, since the circuit box 5 and the charger 6 can be arrange | positioned separately, there exists an advantage that it becomes easy to balance the weight of the vehicle 1 compared with the case where these are arrange | positioned collectively. .

  In this embodiment, as can be seen from FIGS. 1 and 2, the battery assembly 7 is mounted closer to the circuit box 5 than the charger 6. Therefore, the harness 16d connecting the circuit box 5 and the battery assembly 7 (third high-voltage harness, see FIG. 5) is shortened, and high-voltage power is supplied from the circuit box 5 to the battery assembly 7 via the harness 16d. It becomes easy to suppress the power loss when doing. Since the current value of the high voltage power supplied from the circuit box 5 to the battery assembly 7 via the harness 16d becomes relatively high, it is preferable to reduce the power loss as the electric resistance is reduced. Therefore, it is preferable to shorten the harness 16d to reduce the electrical resistance. If the harness 16d is shortened, the weight of the entire harness 16d can be suppressed even if the conductor portion 24 inside the harness 16d is thickened to further reduce the electrical resistance. There is an advantage that the harness 16d can be installed relatively easily. Moreover, in this structure, since the battery assembly 7 and the charger 6 can be arrange | positioned separately, there exists an advantage that it becomes easy to balance the weight of the vehicle 1 compared with the case where these are arrange | positioned collectively. .

  Further, in the present embodiment, the battery assembly 7 is configured to be mounted between the charger 6 and the circuit box 5. Therefore, the battery assembly 7, the charger 6, and the circuit box 5 can be distributed and arranged, and the weight balance of the vehicle 1 can be more easily balanced accordingly. In this embodiment, as can be seen from FIGS. 1 and 2, etc., the battery assembly 7, the charger 6, and the circuit box 5 are distributed in the front-rear direction, so that it is easy to balance the weight in the front-rear direction. Yes.

  During operation of the power unit 3 (during traveling of the vehicle 1), direct current is supplied from the battery assembly 7 to the inverter 4 via the harness 16d (third high-voltage harness), the circuit box 5, and the harness 16e (see FIG. 5). High voltage power is supplied, and AC high voltage power generated by the inverter 4 is supplied to the electric motor 3M. In the present embodiment, since both the circuit box 5 and the inverter 4 are arranged in the front compartment 8, the harness 16e can be made relatively short, and power loss during operation of the power unit 3 can also be suppressed. In particular, in this embodiment, the harness 16e is shortened by arranging the circuit box 5 and the inverter 4 adjacent to each other.

  Further, in the present embodiment, the charging port 15 is disposed in the front portion of the vehicle 1, the circuit box 5 is disposed in the front compartment 8, and the battery assembly 7 and the charger 6 are mounted behind the circuit box 5. Configured. As a result, the circuit box 5 can be easily laid out by the vehicle 1, and the harness 16c between the circuit box 5 and the high voltage charging port 15H can be further shortened to charge high voltage power. It becomes easy to suppress the power loss. Further, by arranging the charging port 15 in the front part of the vehicle 1, it becomes easy to visually recognize the connection state of the power supply cord 14 in the charging port 15, and the vehicle 1 is moved while the power supply cord 14 is connected. It becomes easy to suppress. And it becomes easy to balance the weight of the vehicle 1 in the front-rear direction by arranging the battery assembly 7 and the charger 6 behind the circuit box 5.

  Further, as will be apparent with reference to FIG. 5, the harness 16 a is in the circuit box 5 side (in the present embodiment, in the housing 5 e of the circuit box 5 (see FIGS. 3 and 5)) and in the front compartment 8. ) Is provided with a relay 5da that connects the contacts at the time of charging and separates the contacts at the time of non-charging, and a high voltage is applied to the harness 16a during charging. A high voltage is not applied to the circuit. Therefore, even if the harness 16a that is relatively long in the front and rear direction is damaged by the collision of the vehicle 1 during traveling, the harness 16a is cut off from the portion where the current flows by the relay 5da. It is possible to suppress the occurrence of a short circuit or the occurrence of electric leakage from the damaged portion of the harness 16a to the vehicle body 2, thereby improving safety.

  The layout in which the charger 6 and the high-power components other than the charger 6 are arranged separately before and after the vehicle 1 can achieve both a weight balance before and after the vehicle 1 and a further improvement in safety during traveling. It can be said that it is possible and preferable. The operation of the relay 5d is preferably electrically controlled by a control unit (not shown). In this case, a sensor or the like may be provided to detect the connection of the low voltage power supply cord 14L to the low voltage charging port 15L and operate the relay 5d.

  In addition, as in the present embodiment, the configuration in which the high-power components excluding the charger 6 and the battery assembly 7 are arranged in the front compartment 8 is a small vehicle 1 or a vehicle 1 with a low hood 10c such as a sports car. This is advantageous in terms of component layout when it is difficult to secure a large volume of the front compartment 8. Moreover, there is also an advantage that the motion performance of the vehicle 1 can be improved as much as the weight balance is improved. Furthermore, when the facility (infrastructure) for supplying high-voltage power becomes widespread and it becomes unnecessary to supply low-voltage power, removing the charger 6 from the vehicle 1 increases the weight of the vehicle 1. Although it can be made lighter, according to the configuration according to the present embodiment, the charger 6 can be removed relatively easily because the charger 6 is disposed at a position away from other high-power components. It can be said that this point is also advantageous. In addition, when the vehicle 1 is produced, the specification in which the charger 6 is mounted and the specification in which the charger 6 is not mounted are reduced because the change in the component layout of the vehicle 1 (particularly the layout in the front compartment 8) can be reduced due to the presence or absence of the charger 6. There is also an advantage that it is easy to divide and it is easy to reduce the manufacturing cost.

  In the present embodiment, the high-power components excluding the charger 6 and the battery assembly 7 are arranged in the front compartment 8 and the charging port 15 is arranged in the front portion of the vehicle 1, so that the harness 16 a connected to the charger 6 is provided. The length of the high-voltage harness 16 (16c, 16d, 16e, etc.) to be removed can be further shortened. Therefore, power loss during high voltage charging or power unit 3 operation can be suppressed, and an increase in weight due to relatively thick harnesses 16c, 16d, 16e, etc. can be suppressed. Further, it is possible to reduce the time and labor of routing the harnesses 16c, 16d, 16e and the like.

  As described above, in this embodiment, the circuit box 5 is arranged closer to the charging port 15 (connector portion) than the charger 6. Therefore, the harness 16c (second high-voltage harness) that connects the high-voltage charging port 15H and the circuit box 5 can be shortened, and power loss when charging high-voltage power via the harness 16c is suppressed. It becomes easy to do.

  In the present embodiment, the battery assembly 7 is mounted closer to the circuit box 5 than the charger 6. Therefore, the harness 16d (third high voltage harness) that connects the circuit box 5 and the battery assembly 7 can be further shortened, and power loss when charging high voltage power via the harness 16d can be easily suppressed. Become.

  Further, in the present embodiment, the battery assembly 7 is configured to be mounted between the charger 6 and the circuit box 5. Therefore, the battery assembly 7, the charger 6, and the circuit box 5 can be arranged in a distributed manner, and the weight balance of the vehicle 1 can be easily balanced accordingly.

  In the present embodiment, the charging port 15 is disposed at the front portion of the vehicle 1, the circuit box 5 is disposed in the front compartment 8, and the battery assembly 7 and the charger 6 are mounted behind the circuit box 5. Configured. Therefore, the circuit box 5 can be laid out more easily, and the harness 16c between the high voltage charging port 15H and the circuit box 5 can be shortened to suppress power loss when charging high voltage power. It becomes easy. Further, by arranging the battery assembly 7 and the charger 6 behind the circuit box 5, it becomes easy to balance the weight of the vehicle 1 in the front-rear direction.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the present invention can be applied to a rear wheel drive vehicle. Moreover, a charger may be arrange | positioned in the vehicle front part, a high-power component different from a charger may be arrange | positioned in a vehicle rear part, and a charge port may be arrange | positioned in a vehicle rear part. Further, it is not essential to provide the charging port at the front end or the rear end of the vehicle, and the charging port may be provided so as to be exposed on the side surface of the vehicle front portion or the side surface of the vehicle rear portion. Further, the position and configuration for attaching a high-voltage component other than the charger, the battery assembly, and the charger to the vehicle body are not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 5 Circuit box 6 Charger 7 Battery assembly 7b Battery 15 Charging port (connector part)
15H high voltage charging port 15L low voltage charging port 16a harness (first high voltage harness)
16b harness (low voltage harness)
16c harness (second high-voltage harness)
16d harness (third high-voltage harness)

Claims (2)

A connector part including a low voltage charging port and a high voltage charging port;
A low voltage harness routed from the low voltage charging port;
A charger including a transformer that converts low-voltage power supplied through the low-voltage harness into a high voltage;
A first high voltage harness routed from the charger;
A second high voltage harness routed from the high voltage charging port;
A third high-voltage harness routed from a battery assembly mounted on the vehicle body including a plurality of batteries;
Connection points for electrically connecting at least the first high-voltage harness, the second high-voltage harness, and the third high-voltage harness, and disconnection of voltage application to the first high-voltage harness A circuit box having a relay to perform,
Is a component mounting structure for an electric vehicle with
The connector unit and the circuit box are arranged at the front part of the vehicle, the battery assembly is arranged at the center part in the vehicle longitudinal direction, and the charger is arranged at the rear part of the vehicle. An electric vehicle component mounting structure characterized in that the battery assembly is disposed closer to the connector portion than a charger , and the battery assembly is disposed closer to the circuit box than the charger . Said connector portion is arranged on the vehicle front end, the circuit box is disposed in a front compartment formed in the front part of the vehicle, the battery assembly is disposed under the floor panel in the vehicle longitudinal direction center portion, the charge 2. The component mounting structure for an electric vehicle according to claim 1 , wherein the device is arranged on a floor panel at the rear of the vehicle .

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