JP2015210913A - High-voltage equipment device with cooling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-voltage equipment device with a cooling structure capable of improving the cooling efficiency compared with conventional arts.SOLUTION: In a cooling structure that cools a battery unit 20 and a high-voltage control equipment unit 40 and that exhausts air to an air exhaustion port, the battery unit is arranged while keeping an interval from a wall surface of a case opposed to the other end side of the battery unit. In the high-voltage control equipment unit, a cooling fin 95 is arranged at a position that is downstream of air flown into from a suction port and exhausted from the other end side of the battery unit, and that is opposed to the wall surface. An opening part S is provided between the battery unit and the cooling fin of the high-voltage control equipment unit.

Description

  The present invention relates to a high voltage apparatus having a cooling structure.

  In a vehicle having a motor for traveling, a battery unit having a battery for storing electric power and supplying electric power to the electric device, a high voltage control device unit having an inverter for controlling the electric power of the battery to a predetermined voltage, A high-voltage equipment device equipped with is mounted.

  The high-voltage device described in Patent Document 1 shows a configuration in which a battery unit and a high-voltage control device unit are housed in a substantially rectangular parallelepiped case.

  Generally, a battery unit including a battery or a high voltage control device unit including an inverter generates heat during operation. For this reason, the high voltage device described in Patent Document 1 includes a cooling structure for cooling the battery unit and the high voltage control device unit.

  In this cooling structure, cooling air sucked into the case from the intake duct by the blower fan is sent to the battery unit and the high voltage control device unit in this order, and then discharged to the outside through the exhaust duct. It is configured.

JP 2012-148484 A

  In the technique of Patent Document 1, the air flowing from the battery side is cooled by being introduced along a cooling flow path that connects the battery unit and a high-voltage control device unit including an inverter, a DC / DC converter, and the like. Is realized.

  However, in this case, the cooling of the portion in contact with the flow path is performed promptly, but there is room for further improvement with respect to cooling of other portions in the case such as the atmospheric temperature of the apparatus.

  Then, this invention makes it a subject to provide the high voltage apparatus apparatus which has the cooling structure which improved the cooling efficiency further conventionally.

In order to solve the above-described problems, the present invention includes a battery unit, a high-voltage control device unit that controls electric power of the battery unit, and a case that houses them, and introduces air into the case. An intake port, an intake duct connected to the intake port including one end side of the battery unit, an exhaust port for exhausting the introduced air, and a cooling fin provided in a part of the high-voltage control device unit An exhaust duct connecting the exhaust port and the case, and the air introduced from the intake port cools the inside of the case in the order of the battery unit and the high-voltage control device unit, and the exhaust In the cooling structure for exhausting to the mouth, the battery unit is arranged to be spaced from the wall surface of the case facing the other end side of the battery unit. The high voltage control device unit is arranged in the case side by side with the wall surface of the case while being spaced apart from the battery unit, and the high voltage control device unit flows from the intake port. The cooling fin is disposed so as to face the wall surface at the downstream position of the air discharged from the other end side through the inside of the battery unit, and at the space between the wall surface and the battery unit. An open portion facing the flow of air flowing along the wall surface is provided between the high voltage control device unit.

According to such a configuration, the inside of the battery unit is cooled by the air from the intake duct. And since the air discharged | emitted from a battery unit is arrange | positioned in the position where a battery unit opposes the wall surface of a case at predetermined intervals, it passes the clearance gap by the space | interval smoothly. Thereby, the cooling efficiency of a battery unit can be improved.
Similarly, the air discharged from the battery unit passes through a gap due to the gap between the wall surface and the high-voltage control device unit arranged with a gap from the wall surface. At this time, the air passes through the cooling fin between the high voltage control device unit and the wall surface. Accordingly, the high voltage control device unit is cooled (heat of the high voltage control device unit is radiated from the cooling fin).
Further, according to this configuration, a negative pressure is generated in the open portion between the battery unit and the high voltage control device unit by the air flowing along the case wall surface. Due to this negative pressure, heat inside the high voltage control device unit is sucked out, and thereby the inside of the high voltage control device unit is cooled. In other words, the high-voltage control device unit is cooled by the effect of cooling caused by the air flowing along the wall surface hitting the cooling fins and the negative pressure generated in the open portion by the air flowing along the wall surface (high voltage control at negative pressure). The heat inside the equipment unit is sucked out). Therefore, the cooling efficiency of the high-voltage control device unit can be further improved.

  Further, according to the present invention, a cooling fan for introducing the air into the case is disposed in an intermediate portion of the exhaust duct, and the suction direction of the cooling fan is a direction parallel to the wall surface of the case. It is characterized by.

  According to such a configuration, since the air suction direction by the cooling fan matches the flow direction of the cooling air, the suction resistance is reduced. Thereby, smooth ventilation is performed and cooling efficiency can be improved. In addition, the power consumption of the cooling fan can be reduced.

  Further, according to the present invention, a bus bar for connecting the battery unit and the high voltage control device unit is arranged in the open portion.

  According to such a configuration, since the bus bar is provided in the course of the cooling air flow path, the cooling of the bus bar is further promoted. Since the bus bar is a good conductor, the heat conductivity is good, and cooling of other parts connected to the bus bar is promoted through the bus bar.

  ADVANTAGE OF THE INVENTION According to this invention, the high voltage apparatus apparatus which has the cooling structure which improved the cooling efficiency further conventionally can be provided.

It is the schematic perspective view which looked at the high voltage apparatus apparatus which has the cooling structure which concerns on 1st Embodiment of this invention from the front side. It is a disassembled perspective view at the time of installing the high voltage apparatus apparatus in the rear seat and the back side of the vehicle. It is a figure which shows the internal structure of a high voltage apparatus, and is a cutting | disconnection perspective view which shows the cross section corresponding to the ZZ arrow of FIG. (A) is a figure which shows the detailed structure of an open part and a connection flow path, and is a principal part expanded sectional view of FIG. (B) is XX arrow sectional drawing of Fig.4 (a). It is a figure which shows the detailed structure of the open part and connection flow path with which the high voltage apparatus apparatus which has the cooling structure which concerns on 2nd Embodiment of this invention is provided, and is an expanded sectional view of the part corresponded to the principal part of FIG.

Hereinafter, a high voltage apparatus having a cooling structure according to the present embodiment will be described with reference to FIGS.
In the following description, the case of cooling a high-voltage device installed in a car will be described as an example, but the present invention is not limited to this. The present invention can also be applied to the case of cooling high-voltage equipment devices of equipment other than automobiles, such as industrial machines.
Further, in the following description, the direction axes such as front (front), rear (back), up / down, left / right, etc. are as described in each figure unless otherwise specified. Moreover, the broken line arrow in each figure shall show the flow of the air for cooling in the case 60 of the high voltage apparatus apparatus 10. FIG.

(First embodiment)
FIG. 1 is a schematic perspective view of a high-voltage apparatus device 10 having a cooling structure according to the first embodiment of the present invention as viewed from the front side. FIG. 2 is an exploded perspective view of the rear seat 2 of the vehicle and the high-voltage device 10 installed on the back side thereof. FIG. 3 is a diagram showing the internal structure of the high-voltage device 10, and is a cut perspective view showing a cross section corresponding to the ZZ arrow in FIG. 1. (Hereafter, refer to FIGS. 1 to 3 as appropriate.)

  A high voltage device 10 shown in FIGS. 1 to 3 is a device that is mounted on a vehicle of a hybrid vehicle that travels with an engine and a motor, for example. Although detailed illustration is omitted, the hybrid vehicle converts the direct current to the alternating current by an inverter when supplying power from the battery of the direct current power source to the motor, and also outputs a part of the engine output or the kinetic energy of the vehicle via the motor. When accumulating in the battery, AC is converted into DC by the inverter. Further, since the DC voltage converted by the inverter is high voltage, a part thereof is stepped down by the DC / DC converter.

  As shown in FIG. 1, the high-voltage device 10 includes a battery unit (storage battery unit) 20 having a battery (storage battery) 22 (described later in detail in FIG. 3), and for controlling the power of the battery 22 to a predetermined voltage. And an inverter unit which is a high voltage control device and a high voltage control device unit 40 incorporating a DC / DC converter and the like.

  The high-voltage device 10 has a box-shaped case 60 that houses the battery unit 20 and the high-voltage control device unit 40, and cools the battery unit 20 and the high-voltage control device unit 40 in the case 60. It has a cooling structure.

In the following description, the front side or the front side refers to the lid plate 63 and the front wall 60a side of the case 60 of the high-voltage device 10 described later, and the rear side or the rear side refers to the rear wall of the case 60. It shall point to the 60b side.
Further, when referring to the left and right, as illustrated in FIG. 1, the left and right in a state in which the case 60 of the high-voltage device 10 is viewed from the front side (the cover plate 63 side) is assumed.

  As shown in FIG. 2, the seat 2 is, for example, a rear seat (rear seat) of the vehicle. The seat 2 includes a seat portion 4 on which an occupant sits, and a seat back (center seat back) 3 that constitutes a backrest portion standing upright behind the seat portion 4.

  A side cover (side seat back) 6 is attached to both sides of the seat back 3. The side cover 6 is a cover member made of a synthetic resin molded product. The right side cover 6 is provided with an opening 6a connected to an intake port 46 of an intake duct 45 described later.

  In the seat 2, the seat surface 4 a of the seat portion 4 and the seat surface (front surface) 3 a of the seat back 3 face the interior of the passenger compartment 9, and the back surface 3 b side of the seat back 3 is the lower frame of the vehicle body below the rear tray 7. It faces the trunk room 5 provided between the two. Therefore, the passenger compartment 9 and the trunk room 5 are partitioned by the seat back 3 and the side cover 6.

  And the high voltage apparatus apparatus 10 which concerns on this embodiment is installed in the trunk room 5 by the side of the back surface 3b of the seat back 3, for example. The high-voltage device 10 is installed in a state slightly inclined rearward so that the front wall 60a of the case 60 is along the back surface 3b of the seat back 3.

  As shown in FIG. 2, the case 60 of the high-voltage device 10 includes a rectangular box-shaped main body 61 having an opening 61 a on the entire front side, and a flat lid that covers the opening 61 a of the main body 61. It is comprised with the board 63. FIG. The lid plate 63 constitutes the front wall 60 a of the case 60. The main body 61 is formed in a bottomed container shape surrounded by a rear wall 60b, an upper wall 60c and a lower wall 60d provided around the rear wall 60b, and a pair of side walls 60e, 60e.

Moreover, as shown in FIG. 3, between the battery unit 20 and the high voltage control equipment unit 40, there is a space opened as a ductless, that is, an open portion S.
The battery unit 20 is installed, for example, in a portion (right half) on the right side of the center in the left-right direction (lateral direction) in the case 60. The battery unit 20 includes a box-shaped battery box 21 whose front surface is open, a plurality of batteries (storage batteries) 22 mounted in the battery box 21, and the like.

  The battery box 21 is made of a highly rigid material such as aluminum or magnesium. In addition, a first cooling flow path 65 (detailed later) for circulating cooling air is formed in a gap between the cell batteries constituting each battery 22 mounted inside the battery box 21. In addition, each battery 22 (battery unit 20) is disposed at a position facing the wall surface of the case 60 with a predetermined interval, and the flow resistance of the cooling air is minimized.

  Moreover, the high voltage control equipment unit 40 is arrange | positioned, for example in the left part (left half) from the center of the width direction (lateral direction) in case 60, for example, an inverter unit containing an inverter, a DC / DC converter, etc. The high voltage control devices 40a and 40b, and a partition 44 and wirings 42 (see FIG. 2) for installing them are unitized.

  On the right side of the partition 44, for example, components of the high voltage control device unit 40, the second cooling flow path 80, and the high voltage control device unit 40 are installed in this order from the rear side to the front side. That is, in the high voltage control device unit 40 (in this example, in a region sandwiched between the high voltage control devices 40a and 40b), the second cooling flow path 80 (for supplying cooling air) ( Details will be described later).

In addition, an intake duct 45 for introducing cooling air into the case 60 is installed. The intake duct 45 is formed of, for example, foamed polypropylene.
The intake duct 45 is installed, for example, on the right side of the battery unit 20. The intake port 46 opens toward the front side, the pipe 47 communicates from the intake port 46 to the battery box 21 of the battery unit 20, and the battery. For example, a long side (longitudinal side) along the front wall 60a in the box 21 is provided to extend in the left-right direction from the right end to the left end.
The air inlet 46 is connected to, for example, the opening 6a of the right side cover 6, and the air in the passenger compartment 9 is sucked through the opening 6a.

  A blower fan 90 is installed in the case 60. The blower fan 90 is installed in an intermediate portion of the exhaust duct 55 at a position corresponding to the most downstream side of the high-voltage control device unit 40 that is a cooling component, for example, at the left end in the case 60.

  Further, the mounting angle of the air intake port of the blower fan 90 is adjusted so that the air suction direction of the blower fan 90 is parallel to the wall surface of the case 60, for example, the rear wall 60b, that is, the left-right direction. . By doing in this way, the disturbance in the case 60 of the air used as cooling air is suppressed, and the exhaust efficiency of the air in the case 60 is improved.

  Further, the cooling air in the case 60 is exhausted to the outside through the exhaust duct 55. The exhaust duct 55 may be formed of, for example, foamed polypropylene as with the intake duct 45.

  The exhaust duct 55 extends from the exhaust end 90b (see FIG. 2) of the blower fan 90 and extends to the upper left on the rear side of the case 60 (see also FIG. 1). Further, an exhaust port 56 is provided at the front end (downstream end) of the exhaust duct 55. For example, the exhaust port 56 may be opened in the trunk room 5.

  The cooling structure provided in the case 60 of the high-voltage device 10 is for cooling the battery unit 20 and the high-voltage control device unit 40, and is used for cooling that communicates from the intake duct 45 to the exhaust duct 55 in the case 60. As the air passage, the first cooling flow path 65 for cooling the battery unit 20, the second cooling flow path 80 and the third cooling flow path 85 for cooling the high voltage control device unit 40, and the second An open part S connecting the cooling flow path 80 and the third cooling flow path 85, and a connection connecting the open part S connected from the first cooling flow path 65 and the second cooling flow path 80 and the third cooling flow path 85. And a flow path 70. Hereinafter, this cooling structure will be described in detail.

  First, in this cooling structure, the open portion S is provided between the battery unit 20 and the high voltage control device unit 40. By providing this open portion S, the first cooling flow path 65 allows the third cooling. A negative pressure is generated in the open portion S so as to be involved in the cooling airflow flowing into the flow path 85, that is, the airflow flowing along the wall surface (rear wall 60b). Due to this negative pressure, an air flow corresponding to the second cooling flow path 80 is generated in the high voltage control device unit 40, and the heat in the high voltage control device unit 40 is released by the flow in the second cooling flow path 80. Then, it is further sucked out toward the third cooling flow path 85. Thereby, the inside of the high voltage control equipment unit 40 is cooled. In FIG. 3, it is described that a clear flow path is generated between the high voltage control devices 40 a and 40 b constituting the high voltage control device unit 40 (inside the high voltage control device unit 40). There may be a portion where some air flow is generated, and a clear flow path does not necessarily exist. Incidentally, in FIG. 3 and the like, the second cooling flow path 80 (its flow) is indicated by a thick broken arrow, but a flow in the direction opposite to this flow is also generated inside the high voltage control device unit 40. As a whole, the flow of thick arrows indicates that the heat inside the high-voltage control device unit 40 is discharged.

  That is, air from the open part S and other external spaces constantly flows into the space where the high voltage control device unit 40 is installed. These are generally configured as an air flow in the second cooling flow path 80, and heat is sucked out one after another in the space of the high voltage control device unit 40.

  The connection flow path 70 is a part that mainly connects the first cooling flow path 65 and the third cooling flow path 85. This connection channel 70 faces the open part S, and the open part S is caused by the flow of air from the first cooling channel 65 to the third cooling channel 85 along the wall surface (rear wall 60b). The negative pressure described above is generated.

As shown in FIG. 3, the first cooling channel 65 is a channel through which air for cooling the inside of the battery unit 20 flows. The first cooling flow path 65 includes a first passage indicated by reference numeral 66a, a second passage indicated by reference numeral 66b, and a plurality of communication passages indicated by reference numeral 66c. The intake duct 45 has an extended portion that extends over the entire width of the front side (the seat back 3 side in FIG. 3) of the battery unit 20 (battery box 21), and the extended portion of the intake duct 45 is the first portion. This corresponds to one passage 66a. Incidentally, the tip from the introduction end 65a becomes an extended portion of the intake duct 45 (that is, the first passage).
The second passage 66b is a flow path between the rear side of the battery unit 20 (battery box 21) and the rear wall 60b, and the air that has cooled each battery 22 in the battery box 21 flows therethrough. The communication path 66 c is a flow path for cooling air that flows in the battery box 21.

  Reference numeral 65b indicates a lead-out end. The lead-out end 65b is an outlet of the first cooling passage 65 (first passage 66a → communication passage 66c → second passage 66b). That is, the first cooling flow path 65 has the introduction end 65a as a starting point and the outlet end 65b as an end point. The lead-out end 65 b is connected to the inflow portion 71 of the connection channel 70.

  The second cooling flow path 80 is a flow path for discharging heat from the battery unit 20 to the outside, and is a flow for cooling the high voltage control unit 40 by applying cooling air to the cooling fins 95 described later. Road. The third cooling flow path 85 is a flow path for discharging heat inside the high voltage control device unit 40 to the outside.

  As described above, the cooling fins 95 are provided on the side of the third cooling flow path 85 of the high-voltage control device unit 40 (the cooling fins 95 will be described later in detail in FIG. 4). By doing so, the efficiency of heat exchange between the cooling air that vigorously passes through the third cooling flow path 85 and the high-voltage control device unit 40 that generates heat is increased.

  The cooling air that has absorbed the heat of the high-voltage control device unit 40 by heat exchange with the cooling fins 95 and by the negative pressure generated in the open portion S is sucked into the blower fan 90 and passes through the exhaust duct 55. And exhausted to the outside.

  Further, as shown in FIG. 3, the battery unit 20 and the high voltage control device unit 40 are arranged side by side on the left and right sides in the case 60, and the first cooling channel 65, the second cooling channel 80, For example, the third cooling flow path 85 extends along the left-right direction on both sides in the left-right direction in the case 60, and the open portion S and the connection flow path 70 are the center in the left-right direction in the case 60. Located in the department.

  FIG. 4A is a diagram illustrating a detailed configuration of the open portion S and the connection flow path 70, and is an enlarged cross-sectional view of a main part of FIG. FIG. 4B is a cross-sectional view taken along the line XX in FIG.

  As shown in FIG. 4 (a), the high-voltage control device unit 40 is located on the third cooling flow path 85 side, that is, on the downstream side of the air discharged from the battery unit 20, and the high-voltage control device unit 40 A plurality of cooling fins 95 are provided on the side facing the wall surface of the case 60, for example, the rear wall 60b.

  The cooling fin 95 is made of a material having a high thermal conductivity, and extends, for example, in the longitudinal direction parallel to the wall surface of the case 60 of the high voltage control device unit 40, that is, in the entire left and right direction of the high voltage control unit 40. Formed as follows. And as shown in FIG.4 (b), it arrange | positions so that it may laminate | stack at predetermined intervals, for example seeing from an up-down direction so that mutual fins may oppose.

  In this way, the efficiency of heat exchange between the cooling air that vigorously passes through the third cooling flow path 85 and the high-voltage control device unit 40 that generates heat is increased, and the high-voltage control device unit 40 heat dissipation, that is, cooling is promoted.

  Further, in the high-voltage apparatus 10 of the present embodiment, the cooling air passage that flows through the case 60 from the intake duct 45 to the exhaust duct 55 is, as shown in FIG. 3, the intake duct 45 → first cooling. In addition to the route of the flow path 65 → the connection flow path 70 → the third cooling flow path 85 → (the blower fan 90) → the exhaust duct 55, the second cooling flow path 80 → the open portion S → the connection flow path 70 → the third cooling flow. The route of the path 85 → (blower fan 90) → exhaust duct 55 can be considered. Here, since the blower fan 90 is not a passage but an apparatus, it is written in parentheses. Further, cooling air is successively introduced into the second cooling flow path 80 from the ambient air in the high voltage control device unit 40.

  In this way, cooling air is introduced into the intake duct 45 from the intake port 46 by the operation of the blower fan 90. The cooling air introduced into the intake duct 45 is introduced from the intake duct 45 into the first cooling flow path 65 in the battery box 21. The cooling air in the first cooling channel 65 flows from the first passage 66a to the second passage 66b through the communication path 66c. The cooling air that passes through the first cooling flow path 65 exchanges heat with the battery 22, whereby the heat generated by the battery 22 is cooled.

  The cooling air that has exited the first cooling flow path 65 in the battery unit 20 is introduced into the connection flow path 70. The cooling air introduced into the connection flow path 70 passes straight through the inflow portion 71, maintains the flow velocity, and is guided to the third cooling flow path 85 as it is with almost no pressure loss. At this time, a negative pressure is generated in the open portion S so as to be further involved in this flow velocity around this fast air flow (Bernoulli's theorem). Due to this negative pressure, the cooling air in the second cooling flow path 80 is sucked into the space of the open portion S and is successively wound into the third cooling flow path 85. In this way, an air flow of cooling air occurs inside the case 60, and the high voltage control device unit 40 is efficiently cooled.

  That is, the cooling air passing through the second cooling flow path 80 and the third cooling flow path 85 suppresses the heat generation of the high voltage control device unit 40 including the inverter unit and the DC / DC converter and cools the air. The cooling air that has passed through the third cooling flow path 85 is sucked into the blower fan 90. The cooling air discharged from the blower fan 90 is discharged from the exhaust port 56 through the exhaust duct 55 to, for example, the trunk room 5.

Further, a bus bar 97 is provided between the battery 22 and the high voltage control device unit 40 so as to straddle the open portion S as a power supply line.
The bus bar 97 has, for example, a substantially rectangular cross section, and has a larger surface area than a wire having a circular cross section. The cross-sectional shape of the bus bar 97 is not limited to a rectangle, and may be a polygonal shape, for example.
Accordingly, when the cooling air flows from the first cooling flow path 65 into the third cooling flow path 85 or from the second cooling flow path 80 through the opening S, the third cooling flow path. When the air flows into the air flow 85, heat is also exchanged with the bus bar 97, and the bus bar 97 is cooled together with the high voltage control device unit 40.

(Action / Effect)
The actions and effects of this embodiment are summarized as follows.
The high voltage device apparatus 10 of the present embodiment includes a first cooling channel 65 provided in the battery unit 20 as a cooling structure for cooling the battery unit 20 and the high voltage control device unit 40 installed in the case 60. The second cooling flow path 80 provided in the high-voltage control device unit 40, the open part S, the third cooling flow path 85, the first cooling flow path 65, the open part S, and the third cooling flow path 85. The connecting flow path 70 is connected.

  Moreover, the ventilation fan 90 for ventilating the air for cooling to the 1st, 2nd, 3rd cooling flow path 65,80,85 (including the connection flow path 70) is provided.

  Further, the connection flow path 70 and the open portion S are provided in the center portion between the first cooling flow path 65 and the third cooling flow path 85 in the case 60, and the air in the second cooling flow path 80 is sucked in by negative pressure. It is configured.

  Thereby, while ensuring the smooth flow of the cooling air which penetrates the inside of case 60 in the left-right direction from the 1st cooling channel 65 to the 3rd cooling channel 85 in the shape of a straight line, for example of patent documents 1, It is possible to further improve the cooling efficiency by reducing the air turbulence in the portion corresponding to the inside of the second cooling channel 80 in the present embodiment.

  Further, since negative pressure is efficiently generated at the open portion S, for example, the internal pressure increases at the joining portion, and cooling air leaks outside from the joint of the case 60 and the maintenance lid (not shown). This can be effectively suppressed.

  In the present embodiment, the communication path 66 of the first cooling flow path 65 is led out from the introduction end 65 a by extending the rear side of the battery 22 in the battery box 21 and the front side of the battery 22. A second passage 66b connected to the end 65b and a communication passage 66c extending between the plurality of batteries 22 from the front side to the rear side and connecting the first passage 66a and the second passage 66b are included.

  According to this configuration, since the first passage 66a and the second passage 66b of the communication passage 66 are disposed before and after the battery 22 in the battery unit 20, the first passage 66a and the second passage 66b are circulated. The cooling air to be insulated can insulate between the battery 22 and the rear wall 60b or the front wall 60a of the case 60.

  Therefore, it is possible to prevent the heat generated by the battery 22 from being released to the outside of the case 60 and increasing the external atmosphere, for example, the air conditioning temperature in the passenger compartment. In particular, in the present embodiment, the rear wall 60b and the front wall 60a of the case 60 are a pair of partition walls on the side where the area of the case 60 is wide. Therefore, it is possible to more effectively suppress the heat generated by the battery 22 from being released to the outside of the case 60.

  In addition, cooling fins 95 are provided on the third cooling flow path 85 side of the high-voltage control device unit 40 so as to extend over the entire horizontal direction of the high-voltage control device unit 40, It arrange | positions so that it may oppose.

  By doing so, the efficiency of heat exchange between the cooling air that vigorously flows in the third cooling flow path 85 and the high-voltage control device unit 40 that generates heat is increased, and the high-voltage control device unit 40 is increased. The cooling structure promotes heat dissipation, that is, cooling.

  Furthermore, since the direction of the air inlet of the blower fan 90 is parallel to the side wall of the case 60 and faces the battery unit 20 side, the efficiency of sucking cooling air inside the case 60 is improved, and the air flow for cooling is increased. Can be further promoted.

  Thereby, on the battery unit 20 side, for example, the cells of the battery 22 are cooled more evenly, and the running performance of the vehicle is improved. On the high voltage control device unit 40 side, the high voltage control device unit 40 is efficiently cooled through the cooling fins 95.

Further, a bus bar 97 is provided between the battery 22 and the high voltage control device unit 40 so as to straddle the open portion S as a power supply line. As a result, cooling air flows from the first cooling channel 65 into the third cooling channel 85 or from the second cooling channel 80 to the third cooling channel 85 via the opening S. When doing so, the bus bar 97 is also configured to exchange heat.
As a result, the bus bar 97 is efficiently cooled, the size of the bus bar itself can be reduced, and even if the cross-sectional area remains unchanged at a predetermined value, the current amount can be increased to allow a higher current to flow. Producing benefits.

  By setting it as the above structures, the scavenging in the high voltage apparatus apparatus 10 is promoted efficiently, for example in the vehicle carrying the high voltage apparatus apparatus 10 of this embodiment. As a result, even in a severe usage situation where a long time has passed under a high temperature environment, the return of the high-voltage device 10 is accelerated from the viewpoint of thermal protection, thereby leading to an effect that the electric travel start time is accelerated. be able to.

(Second Embodiment)
Next, the cooling configuration of the high-voltage control device unit 40 according to the second embodiment will be described with reference to FIG.
FIG. 5 is a diagram illustrating a detailed configuration of the open part and the connection flow path included in the high-voltage device 10 having the cooling structure according to the second embodiment, and corresponds to FIG. 4 in the case of the first embodiment. FIG.
In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  In the high voltage control devices 40a and 40b constituting the high voltage control device unit 40 according to the present embodiment, the cooling fins 95 are provided on the second cooling channel 80 side in the same manner as the third cooling channel 85 side. Is provided. That is, the cooling fins 95 are installed on all sides facing the longitudinal direction of the flow path. All other configurations are the same as in the first embodiment.

  That is, as in the first embodiment, air from the open portion S and other external spaces constantly flows into the space where the high voltage control device unit 40 is installed. It is assumed that these air flows in the second cooling flow path 80 as a whole, and heat is sucked one after another in the space of the high-voltage control device unit 40.

  Even if comprised in this way, there can exist an effect similar to 1st Embodiment. Rather, if configured in this way, it can be said that the cooling efficiency is better than that of the first embodiment and is more preferable.

  The above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to the one having all the described configurations.

  In addition, control lines, information lines, and power supply lines are those that are considered necessary for the description, and not all control lines, information lines, and power supply lines are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

  In addition, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and a part or all of the configuration of another embodiment can be added to the configuration of one embodiment. It is.

  In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Specifically, for example, both the first embodiment and the second embodiment have been described with an example in which the high-voltage device 10 is installed on the rear seat 2 of the vehicle and the back side thereof, but the present invention is not limited thereto. For example, the high-voltage device 10 can be installed on the floor portion with the longitudinal direction as the left-right direction.

  Further, although the automobile in the above embodiment has been described as a hybrid automobile, the high-voltage device apparatus 10 having a cooling structure according to the present invention can be applied to an electric vehicle that runs only by a motor and a fuel cell vehicle. is there.

Moreover, although the said embodiment gave and demonstrated the case where it mounts in a motor vehicle, respectively, if it uses a high voltage apparatus, it can apply with respect to all apparatuses.
Specifically, the present invention may be applied to, for example, trains, electric general-purpose machines, industrial machines such as electric power shovels, highly electronic ships and airplanes.

1 Lower frame 2 Seat (rear seat)
3 Seat back (backrest)
3b Rear surface 5 Trunk room 6 Side cover 6a Opening 7 Rear tray 9 Car compartment 10 High voltage device 20 Battery unit 21 Battery box 22 Battery 40 High voltage control device unit 40a, 40b High voltage control device 44 Partition 45 Intake duct 46 Inlet 47 Piping 55 Exhaust duct 56 Exhaust port 60 Case 60a Front wall (second partition)
60b Rear wall (first partition, wall surface)
61 Main body 63 Cover plate 65 First cooling flow path 65a Introduction end (one end side)
65b Lead-out end (other end side)
66a 1st channel | path 66b 2nd channel | path 66c Communication channel 70 Connection flow path 71 Inflow part 80 2nd cooling flow path 85 3rd cooling flow path 90 Blower fan (cooling fan)
95 Cooling fin 97 Busbar S Open part

Claims (3)

A battery unit, a high-voltage control device unit for controlling the power of the battery unit, and a case for housing them,
An air inlet for introducing air into the case;
An intake duct that includes and connects the intake port and one end side of the battery unit;
An exhaust port for exhausting the introduced air;
A cooling fin provided in a part of the high-voltage control device unit;
An exhaust duct connecting the exhaust port and the case;
With
In the cooling structure that cools the inside of the case in the order of the battery unit and the high-voltage control device unit with air introduced from the air inlet, and exhausts it to the air outlet.
The battery unit is disposed to maintain a gap with the wall surface of the case facing the other end side of the battery unit,
The high-voltage control device unit is arranged in the case side by side to the battery unit while maintaining a gap with the wall surface of the case,
The high-voltage control device unit has the wall surface at the downstream position of the air that flows in from the air inlet, passes through the inside of the battery unit, and is discharged from the other end side, and at a portion that is spaced from the wall surface. The cooling fins are arranged to face each other,
A high-voltage device apparatus having a cooling structure, wherein an open portion facing a flow of air flowing along the wall surface is provided between the battery unit and the high-voltage control device unit. The cooling fan for introducing the air into the case is disposed in an intermediate portion of the exhaust duct, and the suction direction of the cooling fan is a direction parallel to the wall surface of the case. A high-voltage apparatus having the cooling structure described in 1. The high voltage apparatus apparatus having a cooling structure according to claim 1, wherein a bus bar that connects the battery unit and the high voltage control apparatus unit is disposed in the open portion.

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