JP6273530B2 - Electrical parts pack - Google Patents

Description

  The present invention relates to an electric component pack mounted on an electric vehicle, and more particularly, to an electric component pack provided with a water injection structure for facilitating water injection into the electric component pack.

  An electric vehicle such as a hybrid vehicle or an electric vehicle that travels using a motor as one of the drive sources has a battery or a power drive unit (hereinafter referred to as a “power drive unit” in this specification) for storing electric energy and driving the motor. Is referred to as a PDU).

  In the event of such an electric vehicle accident, if there is damage such as deformation in the electric component pack, water (tap water, well water, pond water, etc.) Need to be injected). The battery can be discharged by short-circuiting the electrical circuit in the electrical component pack by pouring water into the electrical component pack and slowly electrolyzing the water poured by the electrical energy stored in the battery.

  In addition, even when seawater (water containing salt) is submerged in an electrical component pack when the electric vehicle is submerged, the electrical component pack does not contain water (such as tap water, well water, pond water, etc.) Need to be injected. In addition to the above-described reason, this is performed in order to prevent rapid discharge (electrolysis) due to seawater or the like (water containing salt), and to slowly discharge (electrolysis) with water.

  In the case where water injection is required for the electrical component pack including the electrical components mounted on the electric vehicle as described above, the water injection operation is performed by pouring water from a maintenance plug cover or the like provided in the electrical component pack (for example, Patent Document 1).

JP 2013-86641 A

  In the electrical component pack, the internal space of the electrical component pack is provided with a cooling space for cooling the battery by installing a battery, etc., and a bus bar or a high-voltage line connected to the electrical component and the electrical component is installed to cool the electrical component pack. It may be divided into a space for use and a space outside the space for cooling that is isolated. By partitioning the internal space in this way, bus bars and high-voltage lines connected to the electrical components and the electrical components are not exposed to the cooling air, so the dust and moisture contained in the cooling air are connected to the electrical components and the electrical components. It is possible to stabilize the quality of the electrical component pack by reducing the deterioration over time of the electrical component pack and the like.

  However, when the above-described water injection operation is performed on the electrical component pack in which the internal space is divided, it is necessary to inject water into both the cooling space and the space outside the cooling space, which is troublesome.

  The present invention has been made in view of the above problems, and an object thereof is to facilitate water injection work on an electric component pack having an internal space divided into a plurality of parts.

In the electrical component pack according to the first invention for solving the above-mentioned problem, the space in the pack case is divided into a first space and a second space, and the first space and the second space are electrically connected. An electrical component pack in which components are installed, comprising: a water injection port for injecting water into the first space; and a distribution means for distributing water injected into the first space into the second space. The first space and the second space are separated by a partition, and the flow means includes a flow hole formed in the partition, the first space and the second space in the flow hole. Valve means for communicating the first space and the second space by the water pressure of the water poured into the first space, and the flow hole includes the partition wall. It is provided in the bottom part of this.

An electrical component pack according to a second invention for solving the above-mentioned problems is the electrical component pack according to the first invention, wherein the partition wall is a wall of a cooling air passage through which cooling air for cooling the electrical component flows. The water injection port is formed in a wall of the cooling air passage.

An electrical component pack according to a third invention for solving the above problems is the electrical component pack according to the second invention, wherein the pack case is mounted on a vehicle, and the electrical component installed in the pack case includes: A battery for driving the vehicle is included, the first space is a space in the cooling air passage, and the battery for driving is installed in the first space .

An electrical component pack according to a fourth invention for solving the above-mentioned problems is the electrical component pack according to any one of the first to third inventions, wherein the pack case includes the second space and the pack case. A hole communicating with the external space is provided, and the hole is closed with a detachable closing means .

  According to the electrical component pack pertaining to the first invention, it was provided with a water inlet for pouring water into the first space and a distribution means for circulating the water poured into the first space into the second space. Therefore, when water is poured from the water inlet into the first space of the electrical component pack, water is also poured into the second space by the distribution means, so both the first space and the second space in the electrical component pack Water can be poured easily. As the water injection port, an opening provided so as to communicate the first space and the external space of the pack case, or an existing opening such as a cooling air intake port and an exhaust port can be used. .

Moreover, according to the electrical component pack which concerns on 1st invention, a circulation means is attached to the circulation hole formed in a partition, and the said circulation hole, and the communication with 1st space and 2nd space is interrupted | blocked On the other hand, by configuring the first space and the second space with the valve means for communicating with the water pressure of the water poured into the first space, the electrical component pack can be reliably shut off when water is not poured. In the case of water injection, water can be reliably injected into both the first space and the second space. In addition, by adopting a one-way valve, a relief valve, or the like as the valve means, a simple structure can be achieved, and an increase in manufacturing cost can be suppressed.

According to the electrical component pack of the second invention, the partition wall is constituted by a wall of a cooling air passage through which cooling air for cooling the electrical component flows, and a water inlet is provided on the wall of the cooling air passage. Thus, the first space and the external space of the pack case can be communicated with each other with a simple structure, and the water injection port can be formed at an arbitrary position in consideration of water injection workability.

According to the electrical component pack of the third invention, the first space is the space in the cooling air passage and the battery for driving the vehicle is installed in the first space. Since water can be injected into the drive battery, the drive battery can be cooled by water. Further, at the normal time when water injection is not required, the driving battery can be cooled by sending the cooling air through the cooling passage .

According to the electrical component pack of the fourth invention, the pack case is provided with a hole (for example, a drain hole) that allows the second space and the external space to communicate with each other, and a closing means that can remove the hole (for example, When the water poured into the electrical component pack is drained, the drainage can be reliably and quickly drained from both the first space and the second space .

It is explanatory drawing (II arrow directional cross section in FIG. 2) which shows the structure of the water inlet vicinity of the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the electric vehicle rear part in which the electrical component pack which concerns on Example 1 is mounted. It is sectional drawing (III-III arrow cross section in FIG. 2) which shows the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the state at the time of pouring water to the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the structure of the distribution hole vicinity of the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the effect | action at the time of the water injection in the distribution hole vicinity of the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the effect | action at the time of the waste_water | drain in the flow hole vicinity of the electrical component pack which concerns on Example 1. FIG. It is explanatory drawing which shows the example of the distribution means different from the one-way valve | bulb of the electrical component pack which concerns on Example 1. FIG.

  Embodiments of an electrical component pack according to the present invention will be described below in detail with reference to the accompanying drawings. Needless to say, the present invention is not limited to the following examples, and various modifications can be made without departing from the spirit of the present invention.

  The structure of the electrical component pack according to Embodiment 1 of the present invention will be described with reference to FIGS.

  As shown in FIG. 2, the electrical component pack according to the present embodiment is mounted in the trunk room 1 a located at the rear portion of the electric vehicle 1. The electrical component pack 10 includes an intake duct 20 that communicates the interior of the electrical component pack 10 and the vehicle interior, and an exhaust duct 30 that communicates the interior of the electrical component pack 10 and the outside of the electrical component pack 10. An exhaust fan 40 is attached to the exhaust side end of the exhaust duct 30.

  When the exhaust fan 40 is operated, the air in the vehicle compartment is discharged out of the electrical component pack 10 through the intake duct 20, the electrical component pack 10, and the exhaust duct 30. In other words, the exhaust fan 40 causes the air in the vehicle interior to flow into the electrical component pack 10 through the intake duct 20 as cooling air, and cools various devices in the electrical component pack 10. The cooling air heated by cooling the equipment is exhausted out of the electrical component pack 10 through the exhaust duct 30.

  As shown in FIG. 3, the electric component pack 10 is supplied from a generator (not shown) mounted on the electric vehicle 1 or a power supply source (not shown) outside the electric vehicle 1 in a pack case 50 that is an exterior of the pack. A battery module 60 for storing electric energy, and a PDU (power drive unit) for supplying the electric energy stored in the battery module 60 to various devices provided in the electric vehicle 1 such as a drive motor (not shown). 70. Of course, the electric component pack according to the present invention is not limited to the electric component pack 10 including the high voltage components such as the battery module 60 and the PDU 70 of the present embodiment, and may include the low voltage components.

  The battery module 60 includes a plurality of battery cells 62 installed in a battery case 61, and the PDU 70 includes a DC-DC converter 71 and an inverter 72. In the pack case 50 of the electrical component pack 10, a heat insulating plate 80 made of a heat insulating material is installed substantially horizontally, a battery module 60 is installed below the heat insulating plate 80, and a DC-DC of the PDU 70 is installed above the heat insulating plate 80. Converter 71 and inverter 72 are installed. The driving battery referred to in the present invention corresponds to the battery cell 62.

  The pack case 50 of the electrical component pack 10 includes a lower tray 51 that protects the lower part, an upper cover 52 that protects the upper part, and a work hole cover 53 that protects part of the upper part. The lower tray 51 and the upper cover 52 protect the battery module 60 and the PDU 70 except for a connector portion (not shown) that connects the PDU 70 and various devices of the electric vehicle 1, and the work hole cover 53 protects the connector portion. is there.

  The electrical component pack 10 has an internal space such as the cooling space 90 (first space) through which the cooling air flows to cool various devices in the electrical component pack 10, such as dust and moisture. In order to prevent mixing, the structure is divided into the above-described cooling space outside space 100 (second space) in which the cooling air does not flow.

  That is, in the electrical component pack 10, a cooling air passage 110 that communicates from the intake duct 20 to the exhaust duct 30 is provided, and the battery module 60 is connected in the middle of the cooling air passage 110. Therefore, the cooling air supplied from the intake duct 20 is supplied into the battery case 61 of the battery module 60 from the connecting portion 21 to the intake duct 20 as indicated by an arrow in FIG. The air flows through the air passage 110 to the connecting portion 31 with the exhaust duct 30 and is discharged from the exhaust duct 30. At this time, the cooling air does not flow into the cooling space outside space 100 located between the pack case 50 and the wall of the cooling air passage 110 and the battery case 61.

  As described above, in this embodiment, the wall of the cooling air passage 110 and the battery case 61 of the battery module 60 constitute a partition wall that separates the cooling space 90 and the cooling space outside space 100. That is, the space in the cooling air passage 110 is the cooling space 90, and the battery cell 62 is installed in the cooling space 90. The electrode (not shown) of the battery cell 62 passes through a hole (not shown) provided in the battery case 61 and is arranged in the space 100 outside the cooling space.

  Each space in the intake duct 20, the cooling air passage 110 in the electrical component pack 10, the battery module 60 in the electrical component pack 10, and the exhaust duct 30 communicate with each other to form a cooling space 90. 10, a space that is not the cooling space 90, that is, a pack case 50 (lower tray 51, upper cover 52, work hole cover 53) in the electrical component pack 10, a wall of the cooling air passage 110, and a battery case 61. The space between them is a cooling space outside space 100 that is isolated from the cooling space 90.

  Further, the cooling air passage 110 is installed so as to pass in the vicinity of the DC-DC converter 71 and the inverter 72, and the heat sinks 71 a and 72 a provided in the DC-DC converter 71 and the inverter 72 are placed in the cooling air passage 110. I try to project. That is, the DC-DC converter 71 and the inverter 72 are installed in the space 100 outside the cooling space, and the heat sinks 71a and 72a are protruded into the cooling air passage 110 in the vicinity to thereby provide the DC-DC converter 71 and the inverter. 72 and a bus bar (not shown) and a high-pressure line connected to these can be cooled without being exposed to dust, moisture or the like contained in the cooling air.

  Note that the lower tray of the pack case 50 is isolated so that the external space 120 outside the pack case 50 of the electrical component pack 10, the cooling space 90 in the electrical component pack 10, and the external space 100 for cooling are isolated from each other. 51, an upper cover 52, a work hole cover 53, a cooling air passage 110 in the electrical component pack 10, a battery case 61, and a connecting portion of each of the intake duct 20 and the exhaust duct 30 attached to the electrical component pack 10 are sealed. A member 130 (see FIG. 1) is attached.

  In the electrical component pack 10 described above, it is necessary to inject water into the cooling space 90 and the cooling space outside space 100 in the event of an accident or submergence of the electric vehicle. Therefore, the electrical component pack 10 in the present embodiment has a water injection structure described below, and can easily perform water injection into the cooling space 90 and the cooling space outside space 100.

  As shown in FIG. 1, a circular shape that connects the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10 so that water can be poured into the cooling space 90 from the external space 120 side. Is provided in the wall of the cooling air passage 110 and, as shown in FIG. 5, cooling is performed so that the water injected into the cooling space 90 can circulate to the space 100 outside the cooling space. A flow hole 150 that communicates the space 90 and the space 100 outside the cooling space is provided in the wall of the bottom 110 a of the cooling air passage 110. Considering the efficiency at the time of water injection or drainage, it is preferable to provide the flow hole 150 in the lower part of the cooling space 90, and it is preferable to provide the flow hole 150 at the lowest part of the cooling space 90 if possible.

  As shown in FIG. 1, the water injection port 140 of the cooling air passage 110 has a substantially circular shape as blocking means for blocking communication between the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10. As shown in FIG. 5, a cooling air passage is provided as a blocking means for blocking the communication between the cooling space 90 and the cooling space outside space 100 in the electrical component pack 10, as shown in FIG. A one-way valve 170 is provided in the circulation hole 150 of 110.

  Here, the water injection port 140 is an opening that allows the cooling space 90 (first space) and the external space 120 to communicate with each other, and is a water injection means for injecting water into the cooling space 90 (see FIG. 1). The one-way valve 170 cuts off the communication between the cooling space 90 and the space outside the cooling space 100, while the predetermined pressure from the cooling space 90, that is, the water pressure of water injected into the cooling space 90. In this embodiment, the flow hole 150 and the one-way valve 170 are water that has been poured into the cooling space 90 by the valve means that releases the disconnection of the communication between the cooling space 90 and the outside space 100 for cooling. Is configured to flow to the cooling space outside space 100 (second space) (see FIG. 5).

The water inlet plug 160 is simply a lid fitted into the water inlet 140 in order to block communication between the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10, and when water injection work is required. In addition, any structure that can be easily removed from the water inlet 140 or a structure that can easily release the blocking of communication by the water inlet plug 160 when water injection work is required (see FIG. 1).

  By attaching the water inlet plug 160 to the water inlet 140, the communication between the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10 is reliably blocked, so that the cooling function of the electrical component pack 10 is achieved. Will not be damaged.

  Further, by removing the water inlet plug 160 from the water inlet 140, the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10 are communicated with each other. Can be easily watered.

  As shown in FIG. 5, the one-way valve 170 includes a one-way valve mounting portion 171 attached to the cooling air passage 110 and an umbrella-shaped valve portion made of an elastic body such as a resin provided around the one-way valve mounting portion 171. 172. The one-way valve mounting portion 171 is fitted into a one-way valve mounting through-hole 111 formed in the wall of the bottom portion 110 a of the cooling air passage 110, and the valve portion 172 is a communication provided in the bottom portion 110 a of the cooling air passage 110. The hole 150 is covered from the cooling space outside space 100 side.

  The one-way valve 170 is in a closed state in which the valve portion 172 is in close contact with the wall of the cooling air passage 110 in a normal state, and the communication between the cooling space 90 and the cooling space outside space 100 is blocked. On the other hand, when water is poured into the cooling space 90, the valve portion 172 is deformed by the pressure of the water poured into the cooling space 90 and is opened away from the wall of the cooling air passage 110. The cooling space outside space 100 is communicated.

  In the one-way valve 170, the valve portion 172 is deformed and opened by the water pressure when a certain amount of water is poured into the cooling space 90, and the one-way valve 170 is activated by the operation of the exhaust fan 40 (see FIG. 2). It is assumed that the valve portion 172 is not deformed and does not open due to a change in atmospheric pressure in the cooling space 90 or a flow (wind pressure) of cooling air in the cooling space 90.

  As described above, the flow hole 150 that connects the cooling space 90 and the cooling space outside space 100 is provided in the wall of the bottom portion 110 a of the cooling air passage 110, and the one-way valve 170 is provided in the flow hole 150, thereby cooling the cooling air passage 110. When a certain amount of water is injected into the work space 90, the one-way valve 170 is opened, and the water injected into the cooling space 90 flows to the space outside the cooling space 100. Therefore, as shown in FIG. 4, when water is injected into the cooling space 90 from the water injection port 140, the water flows into both the cooling space 90 and the cooling space outside space 100 in the electrical component pack 10 as shown in FIG. 6. Injected into the space.

  The distribution means in the present invention is not limited to the suction cup-shaped one-way valve 170 as in the present embodiment, and may be configured to open when a certain amount of water is injected into the cooling space 90. As the flow means in the present invention, for example, as shown in FIG. 8, an elastic flat plate 200 is installed from the cooling space outer space 100 side (lower side in the drawing) so as to block the flow hole 150, and one end of the flat plate 200 is installed. Only 200a is fixed to the cooling air passage 110 (see the solid line portion in FIG. 8), and the flat plate 200 is bent when a certain amount of water is injected into the cooling air passage 110, that is, into the cooling space 90. The cooling space 90 and the cooling space outer space 100 may be communicated with each other through the flow hole 150 (see the two-dot chain line portion in FIG. 8).

  The shape of the water inlet in the present invention is not limited to the circular shape of the present embodiment, and may be, for example, a polygon or an ellipse. In addition, the position of the water injection port in the present invention is not limited to the water injection port 140 provided in the cooling air passage 110 as in the present embodiment, and any configuration that can inject water into the cooling space 90 may be used. For example, the water injection port 140 may be provided in the intake duct 20 or the like, and an intake port (not shown) of the intake duct 20 or an exhaust port (not shown) of the exhaust duct 30 may be used as the water injection port.

  Next, the operation of the electrical component pack according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2.

  First, during normal operation of the electric vehicle 1, as shown in FIG. 1, the electrical component pack 10 is in a state where the water inlet 140 of the cooling air passage 110 is blocked by the water inlet plug 160. Further, as shown in FIG. 5, the one-way valve 170 does not have a predetermined water pressure from the cooling air passage 110, that is, the cooling space 90, so that the valve portion 172 is not deformed and closely contacts the wall of the cooling air passage 110. The valve is closed.

  In this state, by operating the exhaust fan 40 in accordance with the temperature rise in the electrical component pack 10, the cooling air in the electrical component pack 10 is exhausted outside the passenger compartment, and the electrical component pack 10 has a negative pressure. The air in the passenger compartment is supplied into the electrical component pack 10 as cooling air through the intake duct 20 (see FIG. 2). In other words, the exhaust fan 40 causes the air in the vehicle interior to flow into the electrical component pack 10 through the intake duct 20 as cooling air, and cools various devices in the electrical component pack 10. The cooling air heated by cooling the equipment is exhausted out of the electrical component pack 10 through the exhaust duct 30.

  Therefore, as shown in FIG. 3, the battery module 60 installed below the heat insulating plate 80 in the electrical component pack 10 has gaps between the plurality of battery cells 62 in which the cooling air is installed in the battery case 61. The DC-DC converter 71 and the inverter 72 of the PDU 70 that are cooled by flowing in a sewn manner and then installed above the heat insulating plate 80 in the electrical component pack 10 have cooling air in the cooling air passage 110. It is cooled by flowing through the gap between the heat sinks 71a, 72a projecting from.

  At this time, the water inlet 140 provided in the cooling air passage 110 is blocked by the water inlet plug 160, so that the cooling air flowing through the cooling air passage 110 leaks into the external space 120 of the electrical component pack 10. The air in the external space 120 of the electrical component pack 10 does not enter the cooling space 90 in the electrical component pack 10 (see FIG. 1). In addition, since the flow hole 150 in the bottom 110a of the cooling air passage 110 is closed by the one-way valve 170, the cooling air flowing through the cooling air passage 110 does not leak into the cooling space outside space 100. (See FIG. 5).

  Therefore, the battery cell 62 installed in the cooling space 90 in the electrical component pack 10 is directly cooled, and the PDU 70 installed in the external space 100 for cooling in the electrical component pack 10 is replaced with the DC-DC converter 71 and the inverter 72. Can be indirectly cooled via the heat sinks 71a and 72a, and a bus bar (not shown) connected to the PDU 70 and the high-voltage line connected to the PDU 70 in the electric component pack 10 can be dust, moisture, etc. (See FIG. 3).

  On the other hand, when the electric component pack 10 is damaged due to an accident of the electric vehicle 1 or when seawater or the like is submerged in the electric component pack 10 due to submergence of the electric vehicle 1, water is injected into the electric component pack 10. There is a need to.

  First, the water inlet plug 160 blocking the water inlet 140 of the cooling air passage 110 in the electrical component pack 10 is removed, and the external space 120 of the electrical component pack 10 and the cooling space 90 in the electrical component pack 10 communicate with each other. (See FIGS. 1 and 4).

  Then, as indicated by arrows in FIG. 4, water is injected from the water injection port 140 of the cooling air passage 110 toward the cooling space 90 in the electrical component pack 10.

  The water injected into the cooling space 90 reaches the bottom of the cooling air passage 110 and accumulates. When the amount of water injected into the cooling air passage 110 exceeds a certain amount, the water pressure applied to the one-way valve 170 provided at the lowermost portion of the cooling air passage 110 exceeds a predetermined value, and the valve portion 172 of the one-way valve 170 Deformation occurs (see FIG. 6). When the valve portion 172 of the one-way valve 170 is deformed, the one-way valve 170 is opened, and the cooling space 90 and the cooling space outside space 100 are communicated with each other through the flow hole 150. That is, the water injected into the cooling air passage 110, that is, the cooling space 90 circulates to the space 100 outside the cooling space in the electric component pack 10 when the injection amount exceeds a certain amount. Water is poured into both the space 90 and the space 100 outside the cooling space.

  A bus bar (not shown), a high voltage line, or the like that is connected to the PDU 70 and the PDU 70 is short-circuited by the water injected into the space 100 outside the cooling space in the electric component pack 10, and the electric energy stored in the battery module 60 passes through the PDU 70. The battery cell 62 is discharged by slowly electrolyzing the water injected into the pack 10, and the battery cell 62 is cooled by the water injected into the cooling space 90 (see FIG. 3).

  In addition, when seawater (water containing salt) is submerged in the electrical component pack 10 due to submersion of the electric vehicle 1, the electrical component pack 10 includes salt (such as tap water, well water, pond water). By injecting the non-contained product, seawater or the like (water containing salt) submerged in the electrical component pack 10 can be diluted or removed. Therefore, rapid discharge (electrolysis) is prevented by seawater (water containing salt), and discharge (electrolysis) is performed slowly by water with low salinity. Can be suppressed.

  According to the electric component pack according to the first embodiment of the present invention, when the electric component pack 10 is damaged due to an accident of the electric vehicle 1 or the electric component pack 10 is submerged in the electric component pack 10 due to submersion of the electric vehicle 1 or the like. In this case, the cooling space 90 and the cooling space for the electrical component pack 10 can be obtained by one operation of removing one water inlet plug 160 attached to the water inlet 140 and injecting water from the water inlet 140 provided at substantially the same location. Water can be poured into the space 100 (see FIGS. 1 and 2).

  That is, in the electric component pack 10 divided into the cooling space 90 and the cooling space outside space 100, it is not necessary to perform water injection work for each divided space, so that the electric component pack 10 is damaged due to an accident of the electric vehicle 1 or the like. In the case where the electric component pack 10 is submerged in water or the like, seawater or the like is submerged in the electric component pack 10, the time required for water injection work is reduced, and the cooling space 90 and the cooling space of the electric component pack 10 are surely reduced. Water can be poured into both of the outer spaces 100.

  In the present embodiment, as shown in FIGS. 5 to 7, a drain hole 180 (hole) and a drain bolt 190 (a drain bolt 190 for closing the drain hole 180) are formed in the bottom 51 a of the lower tray 51 in the pack case 50 of the electrical component pack 10. Closing means). The drain hole 180 is a communication hole that allows the space 100 for cooling outside the electrical component pack 10 to communicate with the external space 120 for the electrical component pack 10. Therefore, when the water injection operation to the electrical component pack 10 and the discharge and cooling of the battery module 60 are completed, the drain bolt 190 of the electrical component pack 10 is removed, and the water injected into the electrical component pack 10 is drained 180. Can be discharged from.

  When the drain bolt 190 is removed after the water injection operation to the electrical component pack 10, first, the water injected into the cooling space outer space 100 is discharged from the drain hole 180. When the water amount (water level) in the cooling space outside space 100 is reduced by drainage from the drain hole 180, the one-way valve is caused by the difference in water amount (water level difference) between the cooling space outside space 100 and the cooling space 90. A predetermined or higher water pressure is applied to 170 (see FIG. 7). Therefore, the one-way valve 170 is opened when the valve portion 172 is deformed by water pressure, and the water injected into the cooling space 90 flows to the space outside the cooling space 100 and is discharged from the drain hole 180. Is done. In addition, it is not limited to the structure which closes a drain hole with a drain volt | bolt like a present Example, For example, the hole provided in the bottom part 51a of the lower tray 51 is a plug (other than a closure means other than a closure means). For example). This also provides the same effect as the above-described action.

  That is, according to the electrical component pack according to the first embodiment of the present invention, the water injection work to the cooling space 90 and the cooling space outside space 100 can be facilitated, and the cooling space 90 and the cooling space outside the cooling space 90 can be facilitated. Draining work from the space 100 can be facilitated.

DESCRIPTION OF SYMBOLS 1 Electric vehicle 1a Trunk room 10 Electrical component pack 20 Intake duct 30 Exhaust duct 40 Exhaust fan 50 Pack case 51 Lower tray 51a Bottom tray 52 Upper cover 53 Work hole cover 60 Battery module 61 Battery case 62 Battery cell 70 Power drive Unit (PDU)
71 DC-DC converter 71a DC-DC converter heat sink 72 Inverter 72a Inverter heat sink 80 Heat insulation plate 90 Cooling space 100 Cooling space outer space 110 Cooling air passage 110a Cooling air passage bottom 111 One-way valve mounting through-hole 120 External space 130 of electric component pack Sealing member 140 Water inlet 150 for cooling air passage Flow hole 160 for cooling air passage Water inlet plug 170 One-way valve 171 One-way valve mounting portion 172 One-way valve valve portion 180 Drain hole 190 Drain bolt

Claims (4)

An electrical component pack in which the space in the pack case is divided into a first space and a second space, and electrical components are installed in each of the first space and the second space,
A water inlet for pouring water into the first space;
Distribution means for distributing water poured into the first space to the second space;
The first space and the second space are separated by a partition wall,
The flow means shuts off the communication between the flow hole formed in the partition and the first space and the second space in the flow hole, while water injected into the first space. Valve means for communicating the first space and the second space by water pressure;
The flow hole is provided at the bottom of the partition wall. The partition is composed of a wall of a cooling air passage through which cooling air for cooling the electrical component flows,
The electrical component pack according to claim 1, wherein the water injection port is formed in a wall of the cooling air passage. The pack case is mounted on a vehicle,
The electric component installed in the pack case includes a battery for driving the vehicle,
The first space is a space in the cooling air passage;
The electric component pack according to claim 2 , wherein the driving battery is installed in the first space . The said pack case is provided with the hole which connects said 2nd space and the exterior space of the said pack case, and was blocked | closed with the closure means which can remove the said hole . The electrical component pack according to any one of the above.

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