JP5831343B2 - Mounting structure of an inverter for external power feeding of a vehicle equipped with a power supply device - Google Patents

Description

  The present invention relates to a structure for mounting an external power feeding inverter to a vehicle including a power supply device used as a power source for vehicle travel.

  For example, there is a hybrid vehicle including a traveling motor and an internal combustion engine. A hybrid vehicle is equipped with a power supply device, and the vehicle is driven by driving a traveling motor using electric power of the power supply device.

  For example, as described in Patent Document 1, the power supply device can be mounted on the floor surface of the luggage space located at the rear of the vehicle.

Japanese Patent No. 4114478

  2. Description of the Related Art In recent years, a power supply device that is a motive power source for vehicle travel uses commercial AC power (for example, AC100V) to an external device connected via an outlet provided in a vehicle interior as a power supply source in the event of a disaster or power failure. It is desired to play the role of an external power supply for supplying power.

  The power supply device can be constituted by, for example, an assembled battery in which a plurality of single cells are connected in series. The DC power output from the assembled battery is converted into AC power by a DC / AC inverter for external power feeding, and commercial AC power is output to an external device connected to an outlet.

  However, if a DC / AC inverter for external power feeding is installed in the luggage space in which the power supply device is mounted, the luggage space will be narrowed by the arrangement space of the DC / AC inverter. It is necessary to devise the mounting position and mounting structure of the AC inverter.

  In addition, the exhaust heat of the DC / AC inverter for external power feeding becomes a factor for lowering the cooling efficiency of the power supply device, and also causes a temperature rise of the DC / AC inverter for external power feeding itself. For example, when the temperature of the DC / AC inverter for external power supply rises, the DC / AC inverter for external power supply stops and there is a possibility that AC power cannot be stably supplied to the external device.

  Therefore, the present invention is equipped with an external power feeding inverter capable of suppressing the temperature rise of the external power feeding inverter while improving the efficiency of the placement space for the vehicle in which the power supply device is arranged in the vehicle interior behind the rear seat. To provide a structure.

The first invention of the present application is a structure for mounting an inverter for external power feeding to a vehicle having a power supply device mounted on the rear side of the rear seat, and is formed on a floor panel on the vehicle rear side from the mounting position of the power supply device. A cover for installing the external power supply inverter recessed below the surface to be covered, and a cover for covering the external power supply inverter installed in the recess from above and partitioning the recess and the space on the floor panel behind the rear seat Connecting the member, a discharge port for exhausting the air introduced into the power supply device for cooling to the outside of the power supply device, and a recess covered with the cover member, and exhaust air exhausted from the discharge port It has a flow path for introducing into the recess, and an outlet for discharging the exhaust air introduced into the recess into the space defined by the cover member . The cover member is connected to the flow path, is provided with a cutout portion for forming an exhaust air inlet for the recess, and is formed to be shorter than the length of the recess in the vehicle front-rear direction. The opening area of the recess between the external power feeding inverter is closed by the cover member, and at least part of the recess between the vehicle rear side wall portion and the rear end portion of the cover member flows without being closed by the cover member. An exit is formed.

  According to the first invention of the present application, an external power supply is provided in a recessed portion formed on the floor panel adjacent to the power supply device at the rear of the rear seat where the power supply device is disposed and recessed downward from the surface on which the power supply device is installed. Since the inverter is arranged, it is possible to suppress the narrowing of the cabin space (luggage space) behind the rear seat, and the exhaust air after cooling the power supply device through the distribution path is covered with the cover member on which the external power feeding inverter is arranged. Since it is introduced into the broken recess, the cooling efficiency of the external power feeding inverter can be improved, and the temperature rise can be suppressed.

The external power feeding inverter is provided between the cover member and the bottom of the recess, and can constitute a unit including a cover member and a guide member for guiding the exhaust air to the external power feeding inverter installed in the recess, A cooling path for the external power feeding inverter formed by the guide member can be formed in the recess. Then, can be configured to the intake side of the cooling path of the external power supply inverter, distribution channel is provided for introducing the exhaust air into the recess.

It can be in the car both the lateral direction and the intake side of the cooling path of the exhaust port and the external power supply inverter is configured to be located on the same side.

  A sealing material can be provided on the floor panel with which the edge of the cover member on the power supply device side or the edge of the cover member abuts.

The power supply device has an intake duct for supplying cooling air to the power supply device, and exhaust air after cooling the power supply device flows, one end is connected to the discharge port, and the other end is connected to the recess to form a flow path. A duct.

A vehicle according to a second aspect of the present invention includes a power supply device mounted behind the rear seat of the vehicle, an external power feeding inverter that converts electric power supplied from the power supply device to predetermined commercial power, and a vehicle mounted more than the mounting position of the power supply device. A recess for installing an external power feeding inverter formed on the floor panel on the rear side and recessed below the surface on which the power supply device is installed, and an external power feeding inverter installed in the recess are covered from above, and And a cover member that divides the space on the floor panel behind the rear seat, a discharge port for exhausting air introduced into the power supply unit for cooling to the outside of the power supply unit, and a recess covered with the cover member connect the door, and distribution channels for introducing exhaust air exhausted from the exhaust port into the recess, the exhaust air introduced into the recess, for discharging the space defined by the cover member Has an outlet, the. Here, the cover member is connected to the flow path, is provided with a notch for forming an inlet for exhaust air to the recess, and is formed shorter than the length of the recess in the vehicle front-rear direction. The opening region of the recess between the inverter and the external power feeding inverter is closed by the cover member, and at least a part between the vehicle rear side wall portion of the recess and the rear end portion of the cover member is not blocked by the cover member. An outlet is formed. The second invention of the present application can also achieve the same effects as the first invention of the present application.

It is a block diagram of the battery system mounted in a vehicle. It is a figure which shows the vehicle-mounted structure of a battery pack and the inverter for external electric power feeding. It is a figure which shows the cooling structure of a battery pack. It is a figure which shows an example of the mounting structure of the battery pack arrange | positioned in the vehicle interior behind a rear seat, and the inverter for external electric power feeding. It is a figure which shows an example of the unit structure of the inverter for external electric power feeding. It is a figure which shows the cooling structure of the inverter for external electric power feeding using the exhaust wind exhausted from a battery pack. It is a figure for demonstrating the cooling structure of the inverter for external electric power feeding, (a) is a top view of the luggage space in which the inverter for external electric power feeding is mounted, (b) is the side view seen from the vehicle rear.

  Examples of the present invention will be described below.

Example 1
A structure for mounting an external power feeding inverter that is Embodiment 1 of the present invention will be described. FIG. 1 is a block diagram showing the configuration of the battery system according to this embodiment. The battery system of the present embodiment supplies electric power for vehicle travel and commercial AC power of an external device connected to an outlet provided in the vehicle, and can be mounted on the vehicle. Vehicles include hybrid cars and electric cars. The hybrid vehicle includes an engine or a fuel cell as a power source for running the vehicle, in addition to the assembled battery described later. An electric vehicle includes only an assembled battery as a power source for the vehicle.

  The assembled battery 10 can be composed of, for example, a plurality of single cells connected in series. As the single battery, a secondary battery such as a nickel metal hydride battery or a lithium ion battery can be used. An electric double layer capacitor (capacitor) can be used instead of the secondary battery. The number of single cells constituting the assembled battery 10 can be appropriately set based on the required output. The assembled battery 10 may include a plurality of unit cells connected in parallel.

  The assembled battery 10 is connected to the boost converter 51 via a connection line. A system main relay SMR-B is provided on the positive line PL that connects the positive terminal of the battery pack 10 and the boost converter 51, and the negative line NL that connects the negative terminal of the battery pack 10 and the boost converter 51 includes A system main relay SMR-G is provided. System main relays SMR-B and SMR-G are switched between ON (connected state) and OFF (cut-off state) in response to a control signal from controller 50.

  Boost converter 51 boosts the output voltage of battery pack 10 and outputs the boosted power to inverter 52. Boost converter 51 steps down the output voltage of inverter 52 and outputs the reduced power to assembled battery 10. The step-up converter 51 can be composed of, for example, a chopper circuit. Boost converter 51 operates in response to a control signal from controller 50.

  Inverter 52 converts the DC power output from boost converter 51 into AC power and outputs the AC power to motor generator 53. As the motor generator 53, for example, a three-phase AC motor can be used. Further, the inverter 52 converts the AC power output from the motor / generator 53 into DC power, and outputs the DC power to the boost converter 51.

  The motor / generator 53 receives the AC power from the inverter 52 and generates kinetic energy for running the vehicle. The motor / generator 53 is connected to the wheels, and the kinetic energy generated by the motor / generator 53 is transmitted to the wheels. When the vehicle is decelerated or stopped, the motor / generator 53 converts kinetic energy generated during braking of the vehicle into electric energy (AC power). The AC power generated by the motor / generator 53 is output to the inverter 52. Thereby, regenerative electric power can be stored in the assembled battery 10.

  In the battery system of the present embodiment, the boost converter 51 is used, but the boost converter 51 can be omitted. That is, the assembled battery 10 can be connected to the inverter 52.

  The DC / AC inverter 20 is an external power feeding inverter, is connected between the assembled battery 10 and the boost converter 51, and converts a DC voltage output from the assembled battery 10 into a commercial AC voltage (for example, according to the external device 40). , AC100V). The DC / AC inverter 20 is connected to an accessory outlet 30 provided in the passenger compartment, and outputs commercial power such as AC 100 V to an external device 40 connected to the accessory outlet 30.

  The accessory outlet 30 is an output unit that outputs commercial power to the external device 40, and is an insertion port that is connected to a connection terminal (plug) of the external device 40. One or a plurality of accessory outlets 40 may be provided in a vehicle compartment including a boarding space where passengers can get on and off, and a luggage area for storing luggage and the like.

  The external device 40 is a device provided separately from the vehicle, and operates by receiving commercial AC power output from the DC / AC inverter 20 via the accessory outlet 30. Examples of the external device 40 include home appliances.

  The controller 50 is a control device that performs input / output control of the battery system. The controller 50 calculates a vehicle required output corresponding to the load required for the entire vehicle, supplies the power stored in the assembled battery 10 to the boost converter 51, and an external connected to the accessory outlet 30. According to the power consumption of the device 40, power supply control for outputting the power stored in the assembled battery 10 to the DC / AC inverter 20 (external device 40) can be performed.

  In performing power supply control to the external device 40, the controller 50 calculates the maximum output of the assembled battery 10 and supplies commercial AC power for the power consumption of the external device within the calculated maximum output range of the assembled battery 10. can do. At this time, if there is electric power (for example, electric power necessary for driving the vehicle or electric power necessary for driving the vehicle-mounted equipment such as an air conditioner) according to the vehicle required output other than the power supply to the external device 40, the controller 50. The power distribution control according to the maximum output can be performed between the power according to the vehicle required output and the commercial AC power with respect to the power consumption of the external device 40 within the range of the maximum output of the assembled battery 10.

  In the external commercial power feeding control, the controller 50 feeds commercial power to the external device 40 via the DC / AC inverter 20 based on, for example, ON / OFF of a commercial power switch (not shown) provided in the passenger compartment. Control can be performed. When the commercial power switch is turned on by a user operation, the controller 50 starts supplying commercial power through the DC / AC inverter 40. When the commercial power switch is turned off, the controller 50 supplies the commercial power to the external device 40. Power supply can be stopped (prohibited).

  Further, the controller 50 performs discharge control for outputting the power of the assembled battery 10 to the motor / generator 53 (boost converter 51) based on the vehicle request output, and at the time of vehicle braking when the vehicle decelerates or stops. Charge control for charging the assembled battery 10 with regenerative power can be performed. In the case of a hybrid vehicle, the controller 50 is configured as a control device that calculates a required vehicle output required for the entire vehicle and performs output control of the engine and / or battery system based on the required vehicle output.

  FIG. 2 is a diagram illustrating an example of a vehicle on which the battery system of the present embodiment is mounted, and illustrates a mode in which the battery pack 1 including the assembled battery 10 is mounted behind the rear seat 110. In FIG. 2 and the like, Fr is the front side of the vehicle, Rr is the rear side of the vehicle, Rh is the vehicle left-right direction orthogonal to the vehicle front-rear direction, and Up is the vehicle upper direction orthogonal to the vehicle front-rear direction and vehicle left-right direction.

  As shown in FIG. 2, the battery pack 1 according to the present embodiment can be mounted on a floor panel (floor surface) P in an in-vehicle space located behind the rear seat 110. There is a luggage space LR located at the rear of the vehicle 100 as an in-vehicle space located behind the rear seat 110. The luggage space is a space for storing luggage and the like. The rear seat 110 of the present embodiment is a seat seat that is located at the rearmost position in the vehicle front-rear direction in the seat seat that is mounted on the vehicle. For example, when three or more rows of seat seats are mounted, the rear seat 110 The seat seat located is the rear seat 110.

  The floor panel P forming the luggage space LR of the present embodiment is formed substantially parallel to the vehicle front-rear direction, and the vehicle vertical direction is higher than the installation surface on the floor panel P on which the battery pack 1 is fixedly arranged. A recess S that is recessed downward is formed.

  The recess S is a storage space for storing, for example, a spare tire. The recess S is located behind the vehicle pack 1 in the luggage space LR, and the battery pack is disposed in the arrangement space formed on the floor panel P between the rear side of the rear seat 110 and the recess S. 1 is arranged. Battery pack 1 and recess S are adjacent to each other in the vehicle front-rear direction.

  The battery pack 1 and the external power feeding inverter 20 according to the present embodiment are disposed in a luggage space LR that is an interior space behind the same rear seat 110. The battery pack 1 is disposed on the floor panel P behind the rear seat 110, and the external power feeding inverter 20 is disposed in the recess S formed on the floor panel P on the vehicle rear side relative to the mounting position of the battery pack 1. The That is, the battery pack 1 and the external power supply inverter 20 of the present embodiment are arranged adjacent to each other in the vehicle front-rear direction, and the external power supply inverter 20 is disposed below the battery pack 1 and shifted in the vehicle vertical direction. .

  FIG. 3 is a diagram showing a configuration of the battery pack 1 of the present embodiment. As shown in FIG. 3, the battery pack 1 includes the assembled battery 10 shown in FIG. 1 and a battery case 2 that houses the assembled battery 10, and is formed in a long shape in the vehicle left-right direction.

  An intake port 2a to which the intake duct 3 is connected and an exhaust port 2b to which the exhaust duct 4 is connected are formed on one side surface of the battery case 2 in the left-right direction of the vehicle. The cooling medium (cooling air) that flows into the battery case 2 from the intake duct 3 through the intake port 2a flows around the assembled battery 10 and between the cells constituting the assembled battery 10, and from the exhaust port 2b to the battery case 2. Exhausted outside.

  As the cooling medium introduced into the battery case 2, for example, air in the passenger compartment can be used. The air (exhaust air) flowing through the battery case 2 and exhausted from the exhaust port 2b to the outside of the battery case 2 is returned again to the vehicle interior such as the luggage space LR. As will be described later, the exhaust air exhausted outside the battery case 2 is used as a cooling medium for cooling the external power feeding inverter 20 mounted in the recess S.

  In the example shown in FIG. 3, a cooling structure in which both the inlet port 2 a and the exhaust port 2 b are provided on one side surface of both side surfaces of the battery case 2 in the vehicle left-right direction, and the cooling medium circulates around the assembled battery 10. However, it is not limited to this. For example, the exhaust port 2b is formed on a side surface different from the side surface in the vehicle left-right direction of the battery case 2 provided with the intake port 2a, and the cooling medium flowing from one side surface of the battery case 2 is transferred from the other side surface of the battery case 2. It is also possible to exhaust the battery case 2 to the outside. In addition, the intake port 2a is provided above the exhaust port 2b in the vertical direction of the vehicle. For example, the exhaust port 2b is provided above and the intake port 2a is provided below and assembled by a cooling medium flowing from the intake port 2a. The battery 10 may be cooled.

  FIG. 4 is a view showing an example of a mounting structure of the battery pack 1 and the external power feeding inverter 20 arranged in the luggage space LR behind the rear seat 110.

As shown in FIG. 4, the battery pack 1 is disposed on the floor panel P at the rear of the rear seat 110, and the floor panel (floor) of the luggage space LR so that the longitudinal direction is the vehicle left-right direction, that is, substantially parallel to the rear seat 110. Surface) P is arranged on P. The battery pack 1 can be configured with a fastening member such as a bolt with respect to the floor panel P, and the battery pack 1 can be fixed to the floor panel P via another member such as a bracket.

  The battery pack 1 installed on the floor panel P behind the rear seat 110 is positioned so that one side surface of the battery case 2 in which the air inlet 2a and the air outlet 2b are formed faces the vehicle body side in the vehicle left-right direction. An intake duct 3 and an exhaust duct 4 are provided between the vehicle side surface and the battery pack 1 in the vehicle left-right direction.

  The air intake duct 3 connected to the air inlet 2a of the battery pack 1 is connected to the outlet of the blower fan B such as a blower. The inlet of the fan B is for taking in air in the vehicle compartment as a cooling medium. It is connected to the intake port 3B. The inlet of the blower fan B and the intake port 3B are connected by a duct 3A. The intake 3 </ b> B can be provided, for example, in the garnish portion of the rear seat 110 in the vehicle left-right direction or below the rear seat 110.

  The exhaust duct 4 connected to the exhaust port 2 b of the battery pack 1 is formed so as to guide the exhaust air of the cooling medium exhausted outside the battery case 2 to the recess S. Specifically, the exhaust port 4a, which is the outlet of the exhaust duct 4, is extended from the exhaust port 2b to the recess S located on the vehicle rear side of the battery pack 1 so that the exhaust port 4a is positioned in the recess S. Thus, a flow path for guiding the exhaust air after cooling the battery pack 1 to the recess S is formed. The exhaust duct 4 is configured so that the opening surface of the discharge port 4a is positioned in the recess S, and the exhaust port 4 is exhausted so that the opening surface of the exhaust port 4 faces the opening surface opening upward of the recess S. By configuring the duct 4, exhaust air can be introduced into the recess S.

  As described above, the recess S of the present embodiment is a storage space formed by recessing a part of the floor panel P below the installation surface on which the battery pack 1 is installed (fixed). It is a storage space for spare tires. In the present embodiment, the external power feeding inverter 20 is installed in the concave portion S forming the storage space, and the cooling medium exhausted from the battery pack 1 with respect to the external power feeding inverter 20 accommodated in the concave portion S is exhausted. It has a mounting structure that cools the external power feeding inverter 20 by introducing wind.

  In other words, when the external power feeding inverter 20 is mounted in the same luggage space LR with respect to the battery pack 1 mounted in the luggage space LR, the luggage space LR is reduced accordingly, but in this embodiment, the storage space for spare tires and the like is reduced. By installing the external power feeding inverter 20 in the recess S adjacent to the battery pack 1, the exhaust air of the cooling medium exhausted from the battery pack 1 is externally fed while preventing the luggage space LR from becoming narrower. The cooling performance of the external power supply inverter 20 is improved by introducing it into the inverter 20 for power supply.

  FIG. 5 is a diagram illustrating an example of a mounting unit of the external power feeding inverter 20 housed in the recess S. FIG.

  As shown in FIG. 5, the external power feeding inverter 20 mounting unit of the present embodiment includes an external power feeding inverter 20 and a bracket 29 on which the external power feeding inverter 20 is fixed and disposed on the bottom surface Sb of the recess S. And a cover member 25 that covers the external power feeding inverter 20 disposed in the recess S from above.

  The cover member 25 is connected to the bracket 29 (wall portion 29b) with a fastening member such as a bolt via two attachment holes 28, and the external power feeding inverter 20 is disposed between the cover member 25 and the bracket 29. It has a configuration.

  The cover member 25 has a width greater than that between the wall portions Sa of the recess S in the left-right direction of the vehicle, and the edge of the periphery of the cover member 25 is the upper surface of the floor panel P around the outside of the opening region of the recess S. It is a plate-shaped cover member that contacts the (installation surface on which the battery pack 1 is disposed) and covers the opening area of the recess S.

  The bracket 29 is a fixing member to which the external power feeding inverter 20 is fixed. The bottom portion 29a is fixed to the bottom surface Sb of the recess S, and guide portions 29b and 29c are provided. The guide portions 29b and 29c are spaced apart so as to sandwich the external power feeding inverter 20 from both sides in the vehicle front-rear direction, and are formed to have a longitudinal direction in the vehicle left-right direction with respect to the external power feeding inverter 20. . The guide portions 29 b and 29 c have a predetermined height from the bottom portion 29 a toward the cover member 25, and the height direction end surfaces of the guide portions 29 b and 29 c are in contact with the cover member 25.

  In the present embodiment, the guide portions 29 b and 29 c provided between the cover member 25 and the bottom Sb of the recess S form a cooling path for the external power feeding inverter 20 in the recess S. The guide members 29 b and 29 c that are spaced apart are guide portions that form a cooling path of the external power feeding inverter 20, and the exhaust air that is introduced from the battery pack 1 into the external power feeding inverter 20 that is disposed in the recess S. To guide.

  In this way, the exhaust air from the battery pack 1 introduced into the recess S is guided to the external power feeding inverter 20 through the cooling path formed by the guide members 29b and 29c, and the external power feeding inverter 20 can be cooled. it can. The cover member 25 may not be fixed to the upper surface of the floor panel P. That is, only by attaching the cover member 25 to the bracket 29 via the two attachment holes 28, the cover member 25 is fixed to the bottom Sb of the recess S via the bracket 29, so that the cover member 25 is fixed to the upper surface of the floor panel P. There is no need to connect and fix.

  As shown in FIG. 6, the cover member 25 of the present embodiment closes the opening region of the recess S between the battery pack 1 and the external power supply inverter 20 in the vehicle front-rear direction, and external power supply inverter 20. To at least a part of the opening area from the recessed portion S to the wall portion Sc on the vehicle rear side. In FIG. 6, an arrow indicated by a solid line indicates a flow of cooling air supplied to the battery pack 1, and an arrow indicated by a two-dot chain line indicates a flow of exhaust air exhausted from the battery pack 1.

  In the present embodiment, the entire recess S is not covered with the cover member 25, but two areas of the opening area of the recess S are not covered with the cover member 25. These two regions are the inlet h1 for allowing the exhaust air exhausted from the battery pack 1 through the exhaust duct 4 to flow into the recess S, and the exhaust air flowing into the recess S from the inlet h1 as the recess S. An outlet h2 is formed to flow out into the outer compartment space.

  The inflow port h1 is an opening region on the battery pack 1 side corresponding to the exhaust port 2b of the battery pack 1 located on the front side in the vehicle front-rear direction with respect to the recess S. When the recess S is covered with the cover member 25, the cover member 25 is provided with a notch 27 for exposing a part of the recess S to form the inflow port h <b> 1. In the example of FIG. 6, the notch 27 is formed so that the corner on the right side of the vehicle where the exhaust port 2 b is located is concave toward the center of the opening region of the recess S, and the exhaust port 4 a of the exhaust duct 4 is formed. The opening surface is arranged so as to face the region of the inflow port h1.

  In addition, at least a part of the opening area of the recess on the vehicle rear side of the recess S from the external power feeding inverter 20 arranged in the recess S is not closed by the cover member 25. That is, the end portion 26b of the cover member 25 located on the vehicle rear side (the end portion opposite to the end portion 26a located on the battery pack 1 side) is the wall portion Sc on the vehicle rear side of the recess S in the vehicle front-rear direction. The cover member is shorter than the length of the recess S in the vehicle front-rear direction so that a part of the opening region of the recess S from the external power feeding inverter 20 toward the rear of the vehicle is not blocked by the cover member 25. 25. Since the space between the wall Sc on the vehicle rear side of the recess S and the end 26b of the cover member 25 is not covered by the cover member 25, the exhaust air flowing into the recess S through the inlet h1 An outlet h2 for flowing out into the passenger compartment is formed (see FIGS. 3 and 6).

  As described above, the mounting unit of the external power feeding inverter 20 according to the present embodiment forms a cooling path for the external power feeding inverter 20 in the concave portion S, and the space on the floor panel P in which the battery pack 1 is disposed and the concave portion S. Partition. And the inlet h1 which introduces the exhaust wind of the battery pack 1 into the recessed part S where the inverter 20 for external power feeding is arranged, the wall part Sc on the rear side in the vehicle front-rear direction of the recessed part S separated from the battery pack 1, and the cover member 25 An outlet h2 for flowing the exhaust air flowing into the recess S from between the end 26b and the exhaust air after cooling the external power feeding inverter 20 into the space on the floor panel P where the battery pack 1 is disposed; , Form.

  FIG. 7 is a diagram for explaining the cooling structure of the external power feeding inverter disposed in the recess S formed in the floor panel P of the present embodiment. FIG. FIG. 7B is a top view of the luggage space LR in which the mounted battery pack 1 is disposed, as viewed from the rear of the vehicle.

  In the recess S formed in the floor panel P on the rear side of the vehicle relative to the mounting position of the battery pack 1, the mounting unit including the external power feeding inverter 20 has a cooling path of the external power feeding inverter 20 substantially parallel in the vehicle left-right direction. In addition, the air intake side of the cooling path of the external power feeding inverter 20 is positioned on the right side of the vehicle on the same side as the exhaust port 2 b provided in the battery pack 1.

  In other words, the intake side of the cooling path of the external power feeding inverter 20 is positioned so as to face the inlet h1 into which the exhaust air of the battery pack 1 is introduced, and the exhaust air introduced into the recess S is from the right side to the left side of the vehicle. The exhaust air flowing toward the outside and flowing out from the external power feeding inverter 20 (exhaust air after cooling the external power feeding inverter 20) comes into contact with the wall portion Sa of the recess S extending in the vehicle upward direction, and the battery pack 1. Return to the space on the floor panel P where the battery pack 1 is disposed from the outlet h2 between the wall portion Sc on the rear side in the vehicle longitudinal direction of the concave portion S and the end portion 26b of the cover member 25.

  At this time, as shown to Fig.7 (a), wall part Sa of the vehicle front side of the recessed part S is curving convexly toward the vehicle front direction. For this reason, the exhaust air flowing from the left-right direction of the vehicle is guided by the curved surface of the wall portion Sa and flows toward the wall portion Sc on the rear side in the vehicle front-rear direction of the recess S. In addition, although the recessed part S of a present Example demonstrated the storage space, such as a spare tire formed in a vehicle, as an example, it is not restricted to this. Specifically, a dedicated rectangular recess S in which the external power feeding inverter 20 is installed can be formed in the floor panel P adjacent to the battery pack 1 instead of a storage space for spare tires or the like. In this case, the air that has flowed into the recess S from the inlet h1 flows out from the outlet h2 into the space on the floor panel P where the battery pack 1 is arranged, so that even if the wall portion Sa is not curved. It flows toward the wall portion Sc on the rear side in the vehicle front-rear direction of the recess S.

  In the present embodiment, the opening region of the recess S between the battery pack 1 and the external power feeding inverter 20 is closed in the vehicle front-rear direction. That is, the end portion 26a of the cover member 25 on the battery pack 1 side is disposed in contact with the upper surface of the floor panel P, and the air heated by the external power feeding inverter 20 from the opening region on the end portion 26a side of the recess S The battery pack 1 is prevented from flowing out and coming into contact with the battery pack 1.

  At this time, the cover member 25 is an edge located on the battery pack 1 side so that air heated by the external power feeding inverter 20 does not leak from the gap between the end portion 26a and the upper surface of the floor panel P. A sealing material Se such as a sealing sponge or a heat insulating material can be provided on the end portion 26a. The sealing material Se can also be provided on the upper surface of the floor panel P with which the edge of the cover member 25 abuts. Note that noise due to the cover member 25 coming into contact with the floor panel P can be suppressed by the sealing material Se.

  The mounting structure of the external power feeding inverter 20 of the present embodiment includes a recess S that is formed on the floor panel P behind the rear seat 110 where the battery pack 1 is disposed and is recessed below the surface on which the battery pack 1 is installed. Since the external power feeding inverter 20 is arranged by using it, it is possible to suppress the narrowing of the cabin space (luggage space) behind the rear seat 110, and the exhaust air after cooling the battery pack 1 through the distribution path is used for external power feeding. The external power feeding inverter 20 is cooled by being introduced into the recess S covered by the cover member 25 where the inverter 20 is installed.

  The temperature of the external power feeding inverter 20 rises due to heat generation. Therefore, it is necessary to cool the external power feeding inverter 20 efficiently. In this embodiment, the exhaust air of the cooling medium that has cooled the battery pack 1 lower than the temperature of the external power feeding inverter 20 is covered with the cover member 25. It can be introduced into the external power feeding inverter 20 arranged in the recessed portion S, and the cooling efficiency of the external power feeding inverter 20 can be improved to suppress the temperature rise.

  That is, it is not necessary to provide a cooling structure for the external power feeding inverter 20 separately from the battery pack 1, and the exhaust air from the battery pack 1 introduced into the recess S from the exhaust duct 4 covers the recess member 25. Can flow (circulate) in the concave portion S, and the exhaust air is guided to the external power feeding inverter 20 through the cooling path formed by the guide members 29b and 29c. Therefore, the external power feeding inverter 20 installed in the concave portion S is provided. The cooling efficiency can be improved.

  In this embodiment, since the exhaust air exhaust port 4a from the battery pack 1 is provided on the intake side of the cooling path of the external power supply inverter 20, the exhaust as a cooling medium for the external power supply inverter 20 is provided. A cooling structure for the external power feeding inverter 20 capable of actively taking in the wind is formed, and the external power feeding inverter 20 can be efficiently cooled using the exhaust air from the battery pack 1 introduced into the recess S. .

  In the present embodiment, an example in which the cooling path formed by the guide portions 29b and 29c is substantially parallel to the vehicle left-right direction is shown, but the present invention is not limited to this. For example, the guide portions 29b and 29c (units on which the external power feeding inverter 20 is mounted) can be configured such that a cooling path extending obliquely in the vehicle front-rear direction or the vehicle front-rear direction is formed in the recess S.

  In addition, the opening region of the recess S between the battery pack 1 and the external power feeding inverter 20 in the vehicle front-rear direction is closed by the cover member 25, and the exhaust air after cooling the external power feeding inverter 20 is the recess S From the outlet h2 of the recess S on the vehicle rear side separated from the battery pack 1 and discharged toward the vehicle front-rear direction rear wall Sc. For this reason, it can suppress that the air warmed by the inverter 20 for external electric power feeding contacts the battery pack 1. FIG.

  Further, since the exhaust port 2b of the battery pack 1 from which the exhaust air is exhausted in the left-right direction of the vehicle and the intake side of the cooling path of the external power feeding inverter 20 are located on the same side, the exhaust duct 4 with respect to the recess S The efficiency of the arrangement space can be improved.

  The cover member 25 that covers the external power supply inverter 20 functions as a protective member that prevents the user from making contact with the external power supply inverter 20 and prevents water and the like from entering, thereby protecting the external power supply inverter 20 from the outside. can do.

  In addition, the cover member 25 of the present embodiment is formed to have a size that covers the opening area of the recess S. As an example, the peripheral edge of the cover member 25 is a floor panel around the outside of the opening area of the recess S. Although the aspect which contact | abutted with the upper surface of P and covered the opening area | region of the recessed part S was shown, it does not restrict to this. For example, the cover member 25 may be formed in a shape that is the same size as or smaller than the shape of the opening region of the recess S, and the cover member 25 may be fastened to the bracket 29 via the two attachment holes 28. . In this case, by providing the sealing material Se between the end portion 26a, which is an edge portion of the cover member 25 located on the battery pack 1 side, and the opening region of the recess S, the battery pack 1 and the external power feeding inverter 20 are connected. Since the opening area of the recess S therebetween can be closed and the weight of the cover member 25 can be supported by the sealing material Se, the two attachment holes are not connected to the upper surface of the floor panel P. It is only necessary to attach the cover member 25 to the bracket 29 via 28.

DESCRIPTION OF SYMBOLS 1 Battery pack 2 Battery case 2a Intake port 2b Exhaust port 3 Intake duct 4 Exhaust duct 4a Exhaust port 10 Battery pack 20 DC / AC inverter (inverter for external power feeding)
25 Cover member 27 Notch 28 Mounting hole 29 Bracket 30 Accessory outlet 40 External device 50 Controller 51 Booster circuit 52 Inverter 53 Motor generator 100 Vehicle 110 Rear seat (rear seat)
LR Luggage space S Recess Se Seal material

Claims (6)

A mounting structure of an inverter for external power feeding in a vehicle equipped with a power supply device behind the rear seat,
A recess for installing the external power feeding inverter formed on the floor panel on the vehicle rear side of the mounting position of the power supply device and recessed below the surface on which the power supply device is installed;
Covering the external power feeding inverter installed in the recess from above, and a cover member that partitions the recess and a space on the floor panel behind the rear seat ;
An exhaust for exhausting air introduced into the power supply device for cooling to the outside of the power supply device and the recess covered with the cover member, and exhausted from the exhaust port A distribution channel for introducing wind into the recess ;
An outlet for discharging the exhaust air introduced into the recess into the space defined by the cover member ;
The cover member is connected to the flow path, is provided with a notch for forming the exhaust air inlet for the recess, and is formed shorter than the length of the recess in the vehicle front-rear direction,
An opening region of the concave portion between the power supply device and the external power feeding inverter is closed by the cover member, and at least a part between a wall portion on the vehicle rear side of the concave portion and a rear end portion of the cover member. The external power feeding inverter mounting structure is characterized in that the outlet is formed without being closed by the cover member . A guide member that is provided between the cover member and the bottom of the recess and guides the exhaust air to the external power feeding inverter installed in the recess;
2. The external power feeding inverter mounting structure according to claim 1, wherein the circulation path is provided on an intake side of a cooling path of the external power feeding inverter formed by the guide member. 3. The external power feeding inverter mounting structure according to claim 2, wherein the exhaust port and an intake side of the cooling path of the external power feeding inverter are located on the same side in the vehicle left-right direction. The floor panel the edge of the edge or the cover member of the power supply end of the cover member comes into contact, according to any one of claims 1 to 3, characterized in that a sealing member Mounting structure for inverter for external power feeding. The power supply device includes an intake duct for supplying cooling air to the power supply device, the exhaust air after cooling the power supply device, one end connected to the discharge port, and the other end connected to the recess. An external power feeding inverter mounting structure according to any one of claims 1 to 4 , further comprising an exhaust duct that forms the flow path. A power supply device mounted behind the rear seat of the vehicle;
An external power feeding inverter that converts power supplied from the power supply device into predetermined commercial power;
A recess for installing the external power feeding inverter formed on the floor panel on the vehicle rear side of the mounting position of the power supply device and recessed below the surface on which the power supply device is installed;
Covering the external power feeding inverter installed in the recess from above, and a cover member that partitions the recess and a space on the floor panel behind the rear seat ;
An exhaust for exhausting air introduced into the power supply device for cooling to the outside of the power supply device and the recess covered with the cover member, and exhausted from the exhaust port A distribution channel for introducing wind into the recess ;
The exhaust air introduced into the recess, have a, an outlet for discharging said space defined by said cover member,
The cover member is connected to the flow path, is provided with a notch for forming the exhaust air inlet for the recess, and is formed shorter than the length of the recess in the vehicle front-rear direction,
An opening region of the concave portion between the power supply device and the external power feeding inverter is closed by the cover member, and at least a part between a wall portion on the vehicle rear side of the concave portion and a rear end portion of the cover member. The vehicle is characterized in that the outlet is formed without being closed by the cover member .

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