charging and discharging device

Abstract

To reduce possibility that water entering a ventilation path enters a housing space which houses a power conversion circuit.SOLUTION: A charge / discharge device 1 includes: a housing 2; a power conversion circuit; and a blowing part 16. The power conversion circuit is stored in the housing 2 and performs power conversion for charge / discharge. A housing space for housing the power conversion circuit and a ventilation path 21 are provided inside the housing 2. The ventilation path 21 is a flow path in which air flows between a first vent hole provided at a lower part of the housing 2 and a second vent hole provided at an upper part of the housing 2. The blowing part 16 is arranged in the ventilation path 21. A partition member 80 for closing at least a part of a space S1 between an inner wall of the ventilation path 21 and the blowing part 16 is provided in the housing 2. The partition member 80 is arranged with gaps GP1 and GP2 through which air flows between at least one of the inner wall of the ventilation path 21 and the partition member 80 and the blowing part 16 and the partition member 80.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a charging / discharging device, and more particularly to a charging / discharging device that is installed on an installation surface. [Background technology]

[0002] Patent Document 1 discloses an installed power conversion device having a box-shaped housing to be installed on an installation surface. The installed power conversion device has a partition wall that separates the space inside the housing into a circuit component housing space for housing electric circuit components and a duct space extending in the vertical direction, an air intake port that connects the lower part of the duct space to the outside, and an air exhaust port that connects the upper part of the duct space to the outside. The installed power conversion device also has a waterproof box located below the circuit component housing space. The waterproof box includes a bottom plate and side plates that are erected on all edges of the bottom plate, and some of the electric circuit components are housed inside the waterproof box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-36456 Summary of the Invention [Problem to be solved by the invention]

[0004] In the installed power conversion device described in Patent Document 1, there is a possibility that water may enter the duct space (ventilation passage) through an exhaust port provided at the top of the duct space. If water accumulates at the bottom of the duct space, the water may enter the circuit component housing space, potentially causing corrosion or deterioration of the electric circuit components (power conversion circuit) housed in the circuit component housing space (housing space).

[0005] An object of the present disclosure is to provide a charge / discharge device that can reduce the possibility that water that has entered the ventilation passage will enter the accommodation space that accommodates the power conversion circuit. [Means for solving the problem]

[0006] A charging / discharging device according to one aspect of the present disclosure includes a housing to be installed on an installation surface, a power conversion circuit housed in the housing and performing power conversion for charging and discharging, and a blower. The housing includes an accommodation space for accommodating the power conversion circuit and a ventilation path for airflow. The ventilation path is a flow path through which air flows between a first ventilation port provided in a lower portion of the housing and a second ventilation port provided in an upper portion of the housing. The blower is disposed in the ventilation path. The housing includes a partition member that closes at least a portion of the space between the inner wall of the ventilation path and the blower. The partition member is disposed with a gap through which air flows between the inner wall of the ventilation path and the partition member and / or between the blower and the partition member. [Effects of the Invention]

[0007] An object of the present disclosure is to reduce the possibility that water that has entered the ventilation duct will enter the housing space that houses the power conversion circuit. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a charging / discharging device according to an embodiment, viewed from one angle. [Figure 2] FIG. 2 is a perspective view of the charging / discharging device as viewed from a different angle. [Figure 3] FIG. 3 is an exploded perspective view of the main part of the charging / discharging device. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. [Figure 6] FIG. 6 is an exploded perspective view of the main part of the charging / discharging device as viewed from the rear. [Figure 7] FIG. 7 is an exploded perspective view of another main part of the charging / discharging device as viewed from the front. [Figure 8] FIG. 8 is an exploded perspective view of the charging / discharging device. [Figure 9]FIG. 9 is an exploded perspective view of the main part of the charging / discharging device. [Figure 10] FIG. 10 is a plan view of a blower block provided in the charge / discharge device. [Figure 11] FIG. 11 is a side view of the main part of the charging / discharging device. [Figure 12] FIG. 12 is a block diagram showing a power conversion circuit of the charging / discharging device. [Figure 13] FIG. 13 is a cross-sectional view of the main part of the charge / discharge device according to the first modification, seen from behind. DETAILED DESCRIPTION OF THE INVENTION

[0009] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. In the embodiments described below, common elements are designated by the same reference numerals, and redundant descriptions of the common elements may be omitted. The following embodiment is merely one of various embodiments of the present disclosure. Various modifications to the embodiment are possible depending on the design, etc., as long as the object of the present disclosure can be achieved. The figures described in this disclosure are schematic diagrams, and the ratios of the size and thickness of each component in each figure do not necessarily reflect the actual dimensional ratios. The arrows indicating each direction in the figures are merely examples and are not intended to define the directions in which the charging / discharging device 1 should be used. Furthermore, the arrows indicating each direction in the figures are merely shown for explanatory purposes and do not represent a physical entity.

[0010] In this disclosure, "orthogonal (perpendicular)" refers not only to a state in which the angle between two objects is exactly 90°, but also to a state in which two objects intersect at right angles within a certain margin of error. In other words, the angle between two objects that are perpendicular to each other falls within a certain range of error (for example, 10° or less) from 90°. In other words, "orthogonal" in this disclosure includes cases in which the angle between two objects is between 80° and 100°. Similarly, "parallel" in this disclosure includes not only a state in which two objects do not strictly intersect, but also a state in which two objects are parallel within a certain margin of error. For example, "parallel" in this disclosure includes cases in which one object is inclined at an angle of 10° or less relative to the other object. In other words, "parallel" in this disclosure includes cases in which the angle between one object and the other is between -10° and 10°.

[0011] (Embodiment) (1) Overview First, an overview of a charge / discharge device 1 according to this embodiment will be described with reference to FIGS.

[0012] In the following description, the direction of gravity is defined as the downward direction. However, the downward direction may deviate from the direction of gravity within a predetermined allowable angle (for example, plus or minus 10°). The opposite of the downward direction is defined as the upward direction. Furthermore, the upward and downward directions may be collectively referred to as the "vertical direction."

[0013] The charging / discharging device 1 shown in Figures 1 to 6 is a device that outputs electric power to charge a storage battery B1 mounted on a mobile object MV1 (see Figure 12) such as a car. In this embodiment, the charging / discharging device 1 is a dedicated charger for an electric vehicle as the mobile object. In this embodiment, the charger is a normal charger, but it may also be a rapid charger.

[0014] As described above, the mobile body MV1 in this disclosure includes a storage battery B1 and moves using the electric energy stored in the storage battery. The mobile body MV1 may include an electric vehicle, a plug-in hybrid vehicle that runs on a combination of engine output and electric motor output, an electric cart, an electric two-wheeled vehicle, an electric three-wheeled vehicle, an electric four-wheeled buggy, a drone, an aircraft, or other flying object. The electric two-wheeled vehicle may include a motorcycle, an electric scooter, and an electrically assisted two-wheeled vehicle. The electric three-wheeled vehicle may include an electric scooter and an electrically assisted three-wheeled vehicle.

[0015] As shown in FIG. 4, the charge / discharge device 1 of this embodiment includes a housing 2, a power conversion circuit 14, and a blower 16.

[0016] The power conversion circuit 14 is housed in the housing 2. The power conversion circuit 14 performs power conversion for charging and discharging.

[0017] The housing 2 is placed on an installation surface 100 (see FIG. 1). As shown in FIG. 4, the housing 2 is provided inside with an accommodation space Sp1 that accommodates the power conversion circuit 14, and a ventilation path 21. The ventilation path 21 is a flow path through which air flows between a first ventilation port 351 provided in the lower part of the housing 2 and a second ventilation port 49 provided in the upper part of the housing 2.

[0018] The ventilation passage 21 has the blower 16 disposed therein.

[0019] The housing 2 is provided with a partition member 80 (see FIG. 5) that closes at least a part of the space S1 between the inner wall (side plate 212) of the ventilation passage 21 and the blower 16.

[0020] The partition member 80 is arranged with gaps GP1, GP2 through which air flows provided between the inner wall of the ventilation passage 21 and the partition member 80, or between the blower section 16 and the partition member 80.

[0021] In the present disclosure, the "installation surface 100" refers to a surface on which the housing 2 of the charging / discharging device 1 is installed, either directly or via a base unit 9 (see FIG. 1 ), which will be described later. For example, the installation surface 100 may be the ground next to a parking space for a vehicle. The installation surface 100 may be parallel to a horizontal plane or tilted from the horizontal plane. The installation surface 100 is not limited to a flat surface, and may also be an uneven surface. In this embodiment, the blower 16 draws air through the first ventilation port 351 located at the bottom of the housing 2, blows the air upward through the ventilation passage 21, and sends the air out through the second ventilation port 49 located at the top of the housing 2. In other words, the first ventilation port 351 located at the bottom of the housing 2 serves as an intake port, and the second ventilation port 49 located at the top of the housing 2 serves as an exhaust port. Here, the second ventilation port 49 is located at the top of the rear surface of the housing 2 and opens obliquely downward. The ventilation passage 21 includes a first flow path 21A extending upward from the first ventilation port 351, and a second flow path 21B that bends downward or diagonally downward from the upper end of the first flow path 21A and continues to the second ventilation port 49.

[0022] In this embodiment, the partition member 80 blocks at least a portion of the space S1 between the inner wall of the ventilation passage 21 and the blower 16. This increases the volume of air passing through the ventilation passage 21 compared to when the partition member 80 is not present. This improves the cooling effect when air-cooling heat-generating components of the power conversion circuit 14 housed in the housing 2. The partition member 80 is also disposed with gaps GP1 and GP2 provided between the inner wall of the ventilation passage 21 and the partition member 80, or between the blower 16 and the partition member 80. Even if water seeps into the ventilation passage 21 through the second ventilation opening 49 provided at the top of the housing 2 and falls onto the upper surface of the partition member 80, the water falls downward through the gaps GP1 and GP2. This reduces the possibility that water pooling on the upper surface of the partition member 80 will enter the housing space Sp1 that houses the power conversion circuit 14 inside the housing 2. Therefore, according to this embodiment, there is an advantage that corrosion and deterioration of the circuit components of the power conversion circuit 14 can be suppressed.

[0023] (2) Details The detailed configuration of the charging / discharging device 1 according to this embodiment will be described below.

[0024] (2.1)Charge / discharge device 1 to 3, the charging / discharging device 1 includes a housing 2, a cover 5, a base 9, an operation display panel 10, a first cable 11, a connector 12, a connector holder 13, and a second cable 15 (see FIG. 12). Also, as shown in FIG. 4, the charging / discharging device 1 includes a heat dissipation member 7, an inner wall 800, a power conversion circuit 14, and a blower 16.

[0025] (2.2) Operation display panel As shown in FIGS. 3 and 7, the operation display panel 10 is disposed in the opening 531 of the front plate 53 of the cover 5. The operation display panel 10 has a plurality of operation buttons 101 (five in the example of FIG. 3) and a plurality of indicator lights 102 (six in the example of FIG. 3) on its front surface. The plurality of operation buttons 101 may include a charge start button that outputs a charge command to instruct the start of charging, a charge stop button that outputs a stop command to instruct the stop of charging, etc. The plurality of indicator lights 102 indicate a plurality of operating states of the charging / discharging device 1 (e.g., a charging state, a charging completion state, an abnormality state, etc.) by, for example, lighting up or blinking.

[0026] (2.3) Connector As shown in FIG. 1, connector 12 is connected to one end of first cable 11. Connector 12 is configured to be connectable to a charging connector CN1 (see FIG. 12) of a moving object MV1. When connector 12 is connected to the charging connector CN1, power is output from a power conversion circuit 14 (see FIG. 12), thereby enabling power to be charged into storage battery B1 of the moving object MV1. Furthermore, when connector 12 is connected to the charging connector CN1, an electrical signal output from the moving object MV1 can be transmitted to power conversion circuit 14 via connector 12 and first cable 11.

[0027] (2.4) Connector holder The connector holder 13 is attached to the housing 2. The connector holder 13 is configured to be able to hold the connector 12. The connector holder 13 holds the connector 12 when not in use.

[0028] (2.5) First Cable The first cable 11 electrically connects the power conversion circuit 14 (see FIGS. 4 and 12) and the connector 12. In this disclosure, "electrically connected" means a connection in an electrically conductive state, and may include not only a direct connection but also an indirect connection via, for example, a conductor such as an electric wire, a breaker, a connector, or a relay (connection device).

[0029] The first cable 11 transmits at least the power output from the power conversion circuit 14 to the connector 12. That is, the first cable 11 of this embodiment functions as a power output cable that outputs the power converted by the power conversion circuit 14. In this embodiment, the first cable 11 also has the function of transmitting the electrical signal output from the moving body MV1 to the connector 12 to the power conversion circuit 14. The first cable 11 is flexible and can be deformed, for example, by being straightened or wound.

[0030] (2.6) Second Cable The second cable 15 (see FIG. 12) electrically connects the power conversion circuit 14 and the external power distribution facility P1. The second cable 15 transmits at least the power output from the power distribution facility P1 to the power conversion circuit 14. That is, the second cable 15 of this embodiment functions as a power input cable that receives power from the power distribution facility P1. The second cable 15 is flexible and can be deformed, for example, by being straightened or wound.

[0031] The external power distribution facility P1 is, for example, a distribution board installed in a home, and power is supplied from a commercial AC power source via the distribution board to a power conversion circuit 14, and the storage battery B1 of the mobile unit MV1 is charged with the power output from the power conversion circuit 14. Note that the power conversion circuit 14 may have a function of converting power discharged from the storage battery B1 of the mobile unit MV1 into an AC voltage of a predetermined voltage value and outputting the AC voltage to the power distribution facility P1, and the power stored in the storage battery B1 of the mobile unit MV1 can be used to operate electrical devices in the home. Note that the external power distribution facility P1 is not limited to a distribution board installed in a home, and may be a non-residential facility such as a commercial facility, public facility, office building, factory, etc.

[0032] (2.7) Base As shown in FIGS. 1 to 3, the base unit 9 is disposed below the housing 2. The base unit 9 is attached to the underside of the housing 2 and placed on an installation surface 100. The base unit 9 is in the shape of a hollow box with open top and bottom surfaces. The base unit 9 is made of, for example, metal. The base unit 9 includes a base main body 90 and a base panel 93.

[0033] The base body 90 includes a pair of side plates 92 and a rear plate 91. The base body 90 has a U-shape when viewed from above.

[0034] In the following description, the direction from one of the pair of side panels 92 to the other is defined as the left direction. The opposite of the left direction is defined as the right direction. The left and right directions may be collectively referred to as the "left-right direction." The left-right direction is perpendicular to the up-down direction. The direction from the rear panel 91 to the base panel 93 is defined as the front direction. The opposite of the front direction is defined as the rear direction. The front and rear directions may collectively be referred to as the "front-rear direction." The front-rear direction is perpendicular to the up-down direction and the left-right direction.

[0035] The rear plate 91 is formed in a rectangular plate shape. An upwardly recessed through-hole 911 is formed at the lower end of the rear plate 91. The internal space Sp6 of the base portion 9 communicates with the outside via the through-hole 911. A first cable 11 is passed through the through-hole 911. Note that a second cable 15 may also be passed through the through-hole 911.

[0036] Each of the pair of side plates 92 is formed in a rectangular plate shape and protrudes forward from both ends of the rear plate 91 in the left-right direction.

[0037] 3, the base body 90 further includes a pair of first mounting plates 94, a pair of second mounting plates 95, and a pair of panel mounting portions 96. Note that the first cable 11, the second cable 15, and the connector 12 are not shown in FIG.

[0038] The pair of first mounting plates 94 are formed in the shape of rectangular plates. The pair of first mounting plates 94 protrude inward (toward each other) in the left-right direction from the lower ends of the pair of side plates 92. Each of the pair of first mounting plates 94 has a plurality of through holes 941 (two in the example of FIG. 3 ) formed therein for fixing the base main body 90 to the installation surface 100 with bolts or the like.

[0039] The pair of second mounting plates 95 are formed in the shape of rectangular plates. The pair of second mounting plates 95 protrude inward (toward each other) in the left-right direction from the upper ends of the pair of side plates 92. Each of the pair of second mounting plates 95 has a plurality of (two in the example of FIG. 3 ) through-holes 951 formed therein for attaching the base main body 90 to the housing 2 with bolts or the like.

[0040] The pair of panel mounting portions 96 are formed in the shape of rectangular plates and protrude inward (toward each other) from the front ends of the pair of side plates 92 in the left-right direction.

[0041] The base panel 93 is formed in a rectangular plate shape. The base panel 93 is attached to the base main body 90 so as to close the front opening of the base main body 90. More specifically, the base panel 93 is attached to a pair of panel mounting portions 96 with screws.

[0042] (2.8) Power conversion circuit 4, the power conversion circuit 14 is disposed in the internal space Sp0 of the housing 2. More specifically, the power conversion circuit 14 is disposed in an accommodation space Sp1 that is a part of the internal space Sp0.

[0043] The power conversion circuit 14 is electrically connected to an external power distribution facility P1 via a second cable 15 (see FIG. 12) and the like. The power conversion circuit 14 receives power from an external power source. The power conversion circuit 14 also supplies chargeable power to the storage battery B1 of the mobile object MV1 via a first cable 11, a connector 12 and the like.

[0044] As shown in FIGS. 4 and 12, the power conversion circuit 14 includes a first circuit 141 and a second circuit 142.

[0045] The first circuit 141 is disposed above the second circuit 142 (see FIG. 4). The first circuit 141 has a first substrate 143. The first substrate 143 has a mounting surface on which a plurality of circuit components are mounted. The normal to the mounting surface is perpendicular to the up-down direction. Specifically, the normal to the mounting surface is along the front-rear direction.

[0046] The first circuit 141 of this embodiment performs power conversion for charging and discharging the storage battery B1 of the mobile object MV1. As shown in Fig. 12, the first circuit 141 of this embodiment is electrically connected to the second circuit 142 via conductors L1 and L2 such as electric wires. For example, the first circuit 141 receives a supply of power from a power distribution facility P1 via the second circuit 142 and the conductor L1, etc. The first circuit 141 outputs the converted power to the storage battery B1 of the mobile object MV1 via the conductor L2, the second circuit 142, etc.

[0047] On the mounting surface of first substrate 143, for example, a plurality of circuit components such as a smoothing capacitor, a transformer, and a power device that generates a large amount of heat are mounted.

[0048] As shown in Fig. 4, the second circuit 142 is disposed below the first circuit 141. The second circuit 142 has a second substrate 144. The second substrate 144 has a mounting surface on which a plurality of circuit components are mounted. The normal to the mounting surface is perpendicular to the up-down direction. Specifically, the normal to the mounting surface is along the front-rear direction.

[0049] The second circuit 142 is a filter circuit having, for example, a capacitor, an inductor, etc. The second circuit 142 reduces, for example, noise components such as high frequency components from the power supplied from the commercial AC power supply and the power output to the moving body MV1.

[0050] As shown in FIG. 12, the second circuit 142 includes a pair of relays 145 connected between the power distribution facility P1 and the first circuit 141 and between the moving body MV1 and the first circuit 141, respectively. The pair of relays 145 are mounted on the mounting surface of the second substrate 144. One of the pair of relays 145 is electrically connected to the second cable 15 (power input cable) via, for example, a connector. The other of the pair of relays 145 is electrically connected to the first cable 11 (power output cable) via, for example, a connector. That is, the second cable 15 and the first cable 11 are electrically connected to the second circuit 142. The pair of relays 145 are, for example, mechanical relays having mechanical contacts or semiconductor relays without mechanical contacts.

[0051] (2.9) Heat radiation part As shown in FIG. 4, the heat dissipation member 7 is disposed behind the power conversion circuit 14. More specifically, the heat dissipation member 7 is disposed behind the first circuit 141. The heat dissipation member 7 is formed of a metal such as aluminum or iron. The heat dissipation member 7 is thermally coupled to heat-generating components of the power conversion circuit 14 and functions as a heat sink for the power conversion circuit 14. The heat dissipation member 7 has a main body portion 71 and a fin portion 72.

[0052] The main body 71 is formed in a rectangular plate shape. The normals of the main surfaces (front and rear surfaces) of the main body 71 are aligned in the front-to-rear direction. The main body 71 is thermally connected to the power conversion circuit 14 (first circuit 141) via, for example, a heat dissipation base or the like provided on the back side of a circuit component that generates a large amount of heat.

[0053] The main body 71 is attached to the upper side of a pair of vertical bars arranged in the vertical direction inside the housing 2. An inner wall 800 is attached to the lower side of the pair of vertical bars. The inner wall 800 is formed in a rectangular plate shape. The normal lines of the main surfaces (front and rear surfaces) of the inner wall 800 are along the front-to-rear direction. The main body 71 attached to the pair of vertical bars and the inner wall 800 divide the internal space Sp0 of the housing 2 into an accommodation space Sp1 and a duct space Sp2 which is part of the ventilation passage 21 (first flow path 21A). In other words, the main body 71 and the inner wall 800 form a partition wall 8 which separates the accommodation space Sp1 from the duct space Sp2 which is the ventilation passage 21. In other words, a partition wall 8 is provided inside the housing 2 which separates the accommodation space Sp1 from the ventilation passage 21. The accommodation space Sp1 is a space located in front of the duct space Sp2 across the partition wall 8 formed by the main body 71 and the inner wall 800. The heat dissipation member 7 is disposed in the ventilation passage 21.

[0054] Here, the rear surface of the inner wall 800 and the rear surface of the main body 71 of the heat dissipation member 7 are flush with each other. In this disclosure, "flush" does not only mean being on the exact same plane, but also includes being on approximately the same plane, i.e., being substantially flush with each other. For example, when A is said to be flush with B, A and B do not have to be on the exact same plane. In other words, when A is said to be flush with B, A only needs to be on approximately the same plane with B, and A may slightly protrude (project) from B or A may be slightly recessed from B. For example, the rear surface of the inner wall 800 may be slightly recessed from the main body 71 of the heat dissipation member 7.

[0055] The fin section 72 has a plurality of rectangular plate-shaped fins. The fins protrude rearward from the rear surface of the main body section 71. The normal line of each of the main surfaces (left and right surfaces) of the fins is along the left-right direction. The fin section 72 is disposed within the first flow path 21A. Because the fin section 72 is disposed within the first flow path 21A, through which air flows when the blower section 16 is operating, the power conversion circuit 14 can be efficiently air-cooled.

[0056] (2.10) Housing 1 to 4, the housing 2 is placed on an installation surface 100. For example, the base part 9 is placed on the installation surface 100, and the housing 2 is attached on the base part 9. The housing 2 of this embodiment has a first housing 3, a duct member 210, a second housing 4, and a partition part 6 (see FIGS. 4 and 7).

[0057] (2.10.1) First enclosure The first housing 3 is formed in a rectangular box shape. The first housing 3 is made of, for example, metal. The first housing 3 has a main body 30 and a front cover 33.

[0058] The main body 30 is formed in the shape of a rectangular box with an opening on the front side. The main body 30 has a rear panel 31, a pair of side panels 32, a top panel 34, and a bottom panel 35.

[0059] The rear plate 31 is formed in a rectangular plate shape. The normal line of the main surface of the rear plate 31 is along the front-rear direction.

[0060] Each of the pair of side plates 32 is formed in a rectangular plate shape. The pair of side plates 32 protrude forward from both ends in the left-right direction of the rear plate 31. The normal lines of the main surfaces of the pair of side plates 32 extend along the left-right direction.

[0061] The top plate 34 is formed in a rectangular plate shape. The top plate 34 protrudes forward from the upper end of the rear plate 31. A normal line to the main surface of the top plate 34 is along the up-down direction. As shown in FIG. 7, a through hole 341 is formed in the center of the rear side of the top plate 34. The through hole 341 is a through hole that connects the first flow path 21A and the second flow path 21B. The through hole 341 in this embodiment is a rectangular hole whose longitudinal direction is along the left-right direction.

[0062] As shown in FIG. 3, the bottom plate 35 is formed in a rectangular plate shape. The bottom plate 35 protrudes forward from the lower end of the rear plate 31. A normal to the main surface of the bottom plate 35 is aligned in the up-down direction. As shown in FIG. 3, a first ventilation opening 351 is formed in the center of the rear side of the bottom plate 35. That is, the first ventilation opening 351 is provided on the lower surface (bottom plate 35) of the housing 2 at a location facing the internal space Sp6 of the base unit 9. As described above, the first ventilation opening 351 serves as an intake port that draws air into the internal space Sp0 (duct space Sp2) of the housing 2 when the blower 16 is operating. In this embodiment, the first ventilation opening 351 is divided into a plurality of small holes 355 by a plurality of lattice members 354 aligned in the left-right direction. That is, the first ventilation opening 351 is divided into a plurality of small holes 355 by a plurality of lattice members (the lattice members 354 in this embodiment) aligned in a predetermined direction. This reduces the possibility that foreign objects such as stones and fallen leaves will enter the duct space Sp2 through the first ventilation port 351. The first ventilation port 351 may be divided into a plurality of small holes by a mesh-like lattice member. Also, the first ventilation port 351 may be fitted with a punched metal or the like having a plurality of small holes formed therein.

[0063] Further, the bottom plate 35 is formed with a through hole 352 and a through hole 353. The through hole 352 is a hole for passing the first cable 11 through. The through hole 353 is a hole for passing the second cable 15 through. That is, in the charging / discharging device 1 of this embodiment, the first cable 11 (power output cable) and the second cable 15 (power input cable) extend from the bottom of the housing 2 to the outside of the housing 2.

[0064] The front cover 33 is formed in a rectangular plate shape. The normal line of the main surface of the front cover 33 is along the front-to-rear direction. The front cover 33 is attached to the main body 30 with, for example, screws so as to close the front opening of the main body 30.

[0065] The storage space Sp1 is a space surrounded by the front cover 33, the pair of side plates 32, the inner wall 800 to which the heat dissipation member 7 is attached, the top plate 34, and the bottom plate 35. The storage space Sp1 is a sealed space. Note that "sealed" in this disclosure is not limited to being closed with no gaps at all, but may also include being closed with some gaps.

[0066] In this embodiment, no air blower is arranged in the accommodation space Sp1. Because no air blower is arranged in the accommodation space Sp1, the temperature distribution in the accommodation space Sp1 during operation of the power conversion circuit 14 is such that the temperature increases toward the top. Therefore, it is preferable to arrange circuit components with relatively low rated temperatures below the accommodation space Sp1, which has a relatively low temperature, thereby reducing the possibility that the temperature of the circuit components with relatively low rated temperatures will exceed the rated temperature. In this embodiment, a pair of relays 145 with relatively low rated temperatures are mounted on the second board 144 of the second circuit 142 located below the first circuit 141, thereby reducing the possibility that the pair of relays 145 will exceed the rated temperature.

[0067] A duct member 210 is disposed inside the first housing 3, behind the partition wall 8, which is formed by the heat dissipation member 7 and the inner wall 800. The duct member 210 forms a duct space Sp2 between itself and the partition wall 8. The duct member 210 is made of, for example, metal. As shown in FIG. 9 , the duct member 210 is formed into a square gutter shape with open front and upper and lower surfaces, and includes a rectangular rear plate 211 disposed parallel to the partition wall 8, which is formed by the heat dissipation member 7 and the inner wall 800, and a pair of side plates 212 protruding forward from both ends of the rear plate 211 in the left-right direction. The upper end of the duct member 210 contacts the top plate 34 of the first housing 3, and the lower end of the duct member 210 contacts the bottom plate 35 of the first housing 3. The front ends of the pair of side plates 212 contact the rear surfaces of a pair of vertical bars to which the heat dissipation member 7 and the inner wall 800 are attached.

[0068] Here, the space surrounded by the heat dissipation member 7, the inner wall 800, and the duct member 210 becomes a duct space Sp2, which is a part of the ventilation path 21. The duct space Sp2 is a space that is continuous with the external space of the housing 2 via the through-hole 341 and the second ventilation port 49 of the top plate 34, or via the first ventilation port 351 of the bottom plate 35. As will be described later, the air blower 16 is disposed in the duct space Sp2, and the duct space Sp2 functions as a first flow path 21A, which is a part of the ventilation path 21.

[0069] By separating the duct space Sp2, which functions as the first flow path 21A, from the storage space Sp1 and placing the power conversion circuit 14 in the storage space Sp1, the waterproof and dustproof performance of the power conversion circuit 14 can be improved while cooling the power conversion circuit 14 stored in the storage space Sp1.

[0070] (2.10.2) Second enclosure 4 and 7, the second housing 4 is formed in a box shape with an open bottom. The second housing 4 is disposed above the first housing 3. More specifically, the second housing 4 is disposed in the center of the rear side of the top plate 34 of the first housing 3 so as to cover the entire through-hole 341 of the top plate 34. The second housing 4 is configured to be detachable from the first housing 3. The second housing 4 is formed of, for example, metal.

[0071] The second housing 4 has a front plate 41 , a first mounting plate 42 , a first inclined plate 43 , a top plate 44 , a second inclined plate 45 , a pair of side plates 46 , and a second ventilation port 49 .

[0072] The front plate 41 is formed in a rectangular plate shape. The normal line of the main surface of the front plate 41 is along the front-rear direction.

[0073] The first mounting plate 42 is formed in a rectangular plate shape. The first mounting plate 42 protrudes forward from the lower end of the front plate 41. The normal line of the main surface of the first mounting plate 42 is along the up-down direction. The first mounting plate 42 is attached to the top plate 34 of the first housing 3 with screws or the like, for example.

[0074] The first inclined plate 43 is formed in a rectangular plate shape. The first inclined plate 43 protrudes obliquely upward and rearward from the upper end of the front plate 41. The normal line of the main surface of the first inclined plate 43 is a line that points upward as it extends forward.

[0075] The top plate 44 is formed in a rectangular plate shape and protrudes rearward from the upper end of the first inclined plate 43. The normal line of the main surface of the top plate 44 is along the up-down direction.

[0076] The second inclined plate 45 is formed in a rectangular plate shape. The second inclined plate 45 protrudes diagonally downward and rearward from the rear end of the top plate 44. The normal line of the main surface of the second inclined plate 45 is a line that extends downward as it extends forward.

[0077] The pair of side plates 46 are formed in a plate shape. The pair of side plates 46 protrude downward from both ends of the top plate 44 in the left-right direction. Each of the pair of side plates 46 is formed in a hexagonal plate shape in a side view with the lower side and upper side parallel to each other. The normal line of the main surface of each of the pair of side plates 46 is along the left-right direction. Each of the pair of side plates 46 is continuous with the left and right ends of the front plate 41, the left and right ends of the first inclined plate 43, and the left and right ends of the second inclined plate 45.

[0078] The pair of second mounting plates 48 are formed in the shape of rectangular plates. The pair of second mounting plates 48 protrude outward (away from each other) in the left-right direction from the lower ends of the pair of side plates 46. The normal line of each main surface of the pair of second mounting plates 48 is aligned in the up-down direction. The pair of second mounting plates 48 are attached to the top plate 34 of the first housing 3, for example, with screws. In this embodiment, the second housing 4 is attached to the top plate 34 of the first housing 3 so that the rear ends of the lower edges of the side plates 46 are aligned with the rear surface of the rear plate 31 in the front-to-rear direction. Here, when the second housing 4 is attached to the top plate 34 of the first housing 3, an opening formed by the pair of side plates 46, the second inclined plate 45, and the rear plate 31 of the first housing 3 serves as a second ventilation port 49 (see FIG. 4 ). In other words, the internal space Sp3 of the second housing 4 is connected to the external space through the second ventilation port 49.

[0079] The internal space Sp3 of the second housing 4 is continuous with the duct space Sp2 of the first housing 3 via the through-hole 341 in the top plate 34 of the first housing 3. The internal space Sp3 of the second housing 4 is continuous from the through-hole 341 in the top plate 34 of the first housing 3 to the second ventilation port 49, and is bent diagonally downward and toward the rear. Because the second ventilation port 49 opens diagonally downward, it is difficult for water and the like to enter the internal space Sp3 of the second housing 4 through the second ventilation port 49.

[0080] The internal space Sp3 of the second housing 4 is divided into a third space Sp4 and a fourth space Sp5 by the partition 6. The third space Sp4 is a space inside the partition 6. The third space Sp4 is connected to the duct space Sp2 of the first housing 3 via a through-hole 341 in the top plate 34 of the first housing 3. The fourth space Sp5 is a space outside the partition 6. The fourth space Sp5 is connected to the external space of the housing 2 via the second ventilation port 49. As a result, the internal space Sp3 of the second housing 4 becomes the second flow path 21B connected to the first flow path 21A. The second ventilation port 49 is connected to the first flow path 21A (i.e., the duct space Sp2) via the second flow path 21B. The second ventilation port 49 serves as an exhaust port that exhausts air from the duct space Sp2 (internal space Sp0) when the blower 16 is operating.

[0081] (2.10.3) Partition 4, the partition 6 is disposed in the internal space Sp3 of the second housing 4. The partition 6 blocks a portion of the second flow path 21B. More specifically, the partition 6 blocks a portion of the second flow path 21B from one side of the pair of side plates 46 of the second housing 4 to the other side. In other words, the length of the partition 6 in the left-right direction is equal to the length between the pair of side plates 46 of the second housing 4.

[0082] The partition 6 is made of, for example, metal. The partition 6 is attached to the top plate 44 of the second housing 4 with both left and right ends in contact with a pair of side plates 46. When the second housing 4 is attached to the first housing 3, the lower end of the partition 6 is in contact with the top plate 34 of the first housing 3, and the partition 6 divides the internal space Sp3 of the second housing 4 into a third space Sp4 and a fourth space Sp5.

[0083] The partition 6 is provided with a plurality of through holes 64 that penetrate the partition 6 in the front-rear direction, and air flows through the plurality of through holes 64. The shape of the plurality of through holes 64 may be a circle, an ellipse, or a polygon other than a rectangle.

[0084] Even when rain or snow enters the second flow path 21B (the fourth space Sp5 of the second housing 4) through the second ventilation port 49 in strong winds, the partition portion 6 blocks part of the second flow path 21B, thereby preventing the rain or snow from entering the first flow path 21A (the fourth space Sp5 of the second housing 4).

[0085] (2.11) Cover As shown in Figures 4 and 7, the cover 5 is formed in a box shape with openings on the bottom, part of the front face, and part of the rear face. The cover 5 is formed of, for example, a synthetic resin. The cover 5 covers the first housing 3, at least part of the second housing 4, and the operation display panel 10 from above. The cover 5 is attached to the top plate 44 of the first housing 3 with, for example, screws. The cover 5 has a top plate 51, a pair of side plates 52, a front plate 53, and a rear plate 54 (see Figure 2).

[0086] The top plate 51 is formed in a rectangular plate shape. The normal line of the main surface of the top plate 51 is along the vertical direction.

[0087] The pair of side plates 52 are formed in a rectangular plate shape and protrude downward from the left and right ends of the top plate 51. The normal to each of the main surfaces of the pair of side plates 52 is aligned in the left-right direction.

[0088] The front plate 53 is formed in a rectangular plate shape. The front plate 53 protrudes downward from the front end of the top plate 51. The normal line of the main surface of the front plate 53 is along the front-rear direction. A rectangular opening 531 is formed in the center of the front plate 53. As described above, the operation display panel 10 is disposed in the opening 531.

[0089] The rear plate 54 is formed in a rectangular plate shape. The rear plate 54 protrudes downward from the rear end of the top plate 51. The normal line of the main surface of the rear plate 54 is along the front-to-rear direction. A rectangular opening 541 is formed in the center of the rear plate 54. The rear portion of the second housing 4 passes through the opening 541. The rear portion of the second housing 4 protrudes rearward from the cover 5 in a top view.

[0090] (2.12) Blower As shown in FIGS. 4 to 6, the blower 16 is disposed in the duct space Sp2 of the first housing 3. The blower 16 of this embodiment includes, for example, two axial fans (one in the example of FIG. 4). The axial fan of this embodiment is a fan that discharges air upward. When the blower 16 is operated, the duct space Sp2 of the first housing 3 functions as the first flow path 21A, and the internal space Sp3 of the second housing 4 functions as the second flow path 21B. Specifically, when the blower 16 is operated, air is drawn into the duct space Sp2 through the first ventilation opening 351 of the first housing 3. The air supplied to the duct space Sp2 (first flow path 21A) moves upward and passes through the through-hole 341 of the first housing 3 to the third space Sp4 (second flow path 21B) of the second housing 4. As the air moves through the first flow path 21A, it acquires heat from the fin portion 72 of the heat dissipation member 7. The air that has moved to the third space Sp4 of the second housing 4 moves upward and passes through the through-hole 64 of the partition 6 into the fourth space Sp5 of the second housing 4. Furthermore, the air that has moved to the fourth space Sp5 moves diagonally downward and rearward and exits the housing 2 through the second ventilation port 49. That is, the air taken in through the second ventilation port 49 moves upward, and then moves diagonally downward and rearward, in a 180° rotated J-shape, before being exhausted through the second ventilation port 49. Note that the first inclined plate 43 and the second inclined plate 45 of the second housing 4 are provided at an angle to the top plate 44, which has the advantage of allowing the air to flow smoothly.

[0091] Moreover, the air blower 16 of this embodiment is disposed above the first ventilation opening 351 and below the fin portion 72 of the heat dissipation member 7. That is, within the ventilation passage 21, the air blower 16 is disposed below the heat dissipation member 7. By disposing the air blower 16 below the fin portion 72 of the heat dissipation member 7, the air blower 16 can be disposed in a position where the temperature is relatively low.

[0092] The blower 16 is attached to the inner wall 800 via a mounting member 17. A rectangular through-hole 801 (see FIGS. 6 and 9) that penetrates the inner wall 800 in the front-to-rear direction is provided in the center in the left-to-right direction at the bottom of the inner wall 800. The mounting member 17 is formed in the shape of a rectangular plate that is larger in the up-down and left-to-right directions than the through-hole 801. The blower 16 is attached to the rear surface of the mounting member 17.

[0093] Mounting member 17 is attached to the front surface of inner wall 800 with screws or the like, with blower 16 passing through through-hole 801 from the front side of inner wall 800 (see FIG. 4). Therefore, as shown in FIG. 8, when front cover 33 is removed, mounting member 17 can be removed or attached from the front side of first housing 3, so that mounting member 17 that holds blower 16 can be easily attached / detached.

[0094] (2.13) Partition member The partition members 80 are made of, for example, metal. In this embodiment, one partition member 80 is attached to the rear surface of the inner wall 800, on each side of the blower 16 (see FIGS. 5 and 6). In other words, two partition members 80 are provided in the housing 2, and the blower 16 is disposed between the two partition members 80. When viewed from above or below, the partition members 80 block at least a portion of the space S1 between the inner wall of the ventilation passage 21 and the blower 16.

[0095] 5, each of the pair of partition members 80 includes a rectangular shielding plate 81 that is arranged so that the normal to its main surface is along the direction of air flow in the duct space Sp2, and an attachment portion 82 that protrudes from the front end of the shielding plate 81 in a direction perpendicular to the shielding plate 81. The partition member 80 is attached to the rear surface of the inner wall 800 by fixing the attachment portion 82 to the rear surface of the inner wall 800 with screws or the like.

[0096] Each of the two partition members 80 is arranged with gaps GP1 and GP2 through which air flows provided between the partition member 80 and the side plate 212 that forms the inner wall of the ventilation passage 21, and between the blower unit 16 and the partition member 80 (see FIG. 5). That is, in this embodiment, gaps GP1 and GP2 are provided both between the inner wall of the ventilation passage 21 and the partition member 80, and between the blower unit 16 and the partition member 80. Here, the size of the gaps GP1 and GP2 is set to be larger than the dimension that would impede the flow of water due to surface tension, for example, about several millimeters.

[0097] When the housing 2 is installed on the installation surface 100 (hereinafter referred to as the installed state), the upper surface of each of the two partition members 80 is inclined obliquely with respect to the horizontal plane. In other words, each of the two partition members 80 is attached to the inner wall 800 so that, in the installed state, the upper surface of the partition member 80 is inclined obliquely with respect to the horizontal plane. More specifically, each of the two partition members 80 is arranged in the ventilation passage 21 so that a first end closer to the blower 16 is positioned lower than a second end farther from the blower 16.

[0098] Therefore, when water that has entered the ventilation passage 21 from the second ventilation port 49 falls onto the upper surface of the partition member 80, the water flows downward along the upper surface of the partition member 80 and falls downward through the gap GP2. Furthermore, water that has fallen along the side plate 212 passes through the gap GP1 between the side plate 212 and the partition member 80 and continues to fall. Therefore, water is less likely to accumulate on the upper surface of the partition member 80, reducing the possibility of water entering the storage space Sp1.

[0099] In this embodiment, the mounting member 17 that holds the air blower 16 and the partition member 80 are separate, and the mounting member 17 and the partition member 80 are separately attached to the inner wall of the ventilation passage 21 (inner wall 800 in this embodiment). Since the mounting member 17 that holds the air blower 16 and the partition member 80 are configured as separate members, if the air blower 16 breaks down, only the mounting member 17 that holds the air blower 16 can be removed from the inner wall 800 and the air blower 16 can be replaced. Therefore, the replacement work of the air blower 16 can be easily performed.

[0100] (3) Variations Modifications of the above embodiment are listed below. The modifications described below can be applied in appropriate combinations.

[0101] In the above embodiment, each of the two partition members 80 may be arranged in the ventilation passage 21 so that the second end farther from the blower 16 is positioned lower than the first end closer to the blower 16.

[0102] Furthermore, the partition member 80 may have a gap only at the lower end side of the first end close to the blower 16 and the second end far from the blower 16.

[0103] 13, the housing 2 may be provided with a partition member 80A whose upper surface is parallel to the horizontal plane when the housing 2 is installed on the installation surface 100. In this case, the partition member 80A is preferably provided with one or more drainage holes that penetrate the partition member 80A in the vertical direction, so that water that falls on the upper surface of the partition member 80A can fall downward through the drainage holes.

[0104] Furthermore, in the above embodiment, as shown in Figure 11, the front and rear ends of the partition member 80 are located at the same height when viewed from the front-to-rear direction, but the rear end of the partition member 80 may be located above or below the front end.

[0105] Furthermore, the blower 16 may be disposed adjacent to one of the pair of side plates 212 that form the inner walls of the ventilation section 21, in which case the partition member 80 needs to be disposed only between the other side plate 212 and the blower 16. It is preferable that a gap for draining water be provided between the blower 16 and one of the side plates 212, so that water that falls down one of the side plates 212 falls straight through the gap.

[0106] The upper surface of the shielding plate 81 of the partition member 80 is flat, but may be curved and convex upward. The upper surface of the shielding plate 81 may be curved and convex downward, in which case it is preferable that a drainage hole be provided at the bottom.

[0107] In addition, the partition member 80 in the above embodiment may be provided with one or more drainage holes that penetrate the partition member 80 in the vertical direction, so that water that falls on the upper surface of the partition member 80 can fall downward through the drainage holes.

[0108] Furthermore, the position of the air blower 16 is not limited to that in the above embodiment and can be changed as appropriate, and the air blower 16 may be disposed above the heat dissipation member 7 .

[0109] Furthermore, in the above embodiment, the blower 16 has two axial fans, but the number of axial fans is not limited to two and can be changed as appropriate.

[0110] (summary) The above-described embodiments and the like disclose the following aspects.

[0111] A charging / discharging device (1) of a first aspect includes a housing (2) installed on an installation surface (100), a power conversion circuit (14) housed in the housing (2) and performing power conversion for charging and discharging, and a blower (16). The housing (2) includes an accommodation space (Sp1) for accommodating the power conversion circuit (14) and an air passage (21) for airflow. The air passage (21) is a flow path through which air flows between a first air vent (351) provided in a lower portion of the housing (2) and a second air vent (49) provided in an upper portion of the housing (2). The air passage (21) is provided with a blower (16). The housing (2) includes a partition member (80, 80A) that closes at least a portion of the space between the inner wall of the air passage (21) and the blower (16). The partition members (80, 80A) are arranged with gaps (GP1, GP2) through which air flows provided between the inner wall of the ventilation passage (21) and the partition members (80, 80A) and / or between the blower section (16) and the partition members (80, 80A).

[0112] According to this embodiment, even if water that has entered the ventilation passage (21) falls onto the upper surface of the partition member (80, 80A), the water that has fallen onto the upper surface of the partition member (80, 80A) falls downward through the gaps (GP1, GP2), thereby reducing the possibility that water that has accumulated on the upper surface of the partition member (80, 80A) will enter the storage space (Sp1).

[0113] In the charge / discharge device (1) of the second aspect, in the first aspect, gaps (GP1, GP2) are provided both between the inner wall of the ventilation passage (21) and the partition member (80, 80A) and between the blower section (16) and the partition member (80, 80A).

[0114] According to this embodiment, water that runs down the inner wall of the ventilation passage (21) passes through the gap (GP1) between the inner wall of the ventilation passage (21) and the partition member (80, 80A) and falls directly. Moreover, water that has accumulated on the upper surface of the partition member (80, 80A) falls through the gaps (GP1, GP2), thereby reducing the possibility of water entering the storage space (Sp1).

[0115] In the charge / discharge device (1) of the third aspect, in the first or second aspect, the upper surface of the partition member (80, 80A) is inclined obliquely with respect to the horizontal plane when the housing (2) is placed on the placement surface (100).

[0116] According to this embodiment, water that falls on the upper surface of the partition member (80, 80A) flows downward, which is advantageous in that water is less likely to accumulate on the upper surface of the partition member (80, 80A).

[0117] In the charge / discharge device (1) of the fourth aspect, in any one of the first to third aspects, two partition members (80, 80A) are provided in the housing (2). The air blower (16) is disposed between the two partition members (80, 80A).

[0118] According to this embodiment, even if water that has entered the ventilation passage (21) falls onto the upper surfaces of the partition members (80, 80A) on both sides of the blower section (16), the water that has fallen onto the upper surfaces of the partition members (80, 80A) falls downward through the gaps (GP1, GP2), thereby reducing the possibility that water accumulated on the upper surfaces of the partition members (80, 80A) will enter the storage space (Sp1).

[0119] In the charge / discharge device (1) of the fifth aspect, in the fourth aspect, each of the two partition members (80, 80A) is arranged in the ventilation passage (21) so that the first end closer to the blower section (16) is positioned lower than the second end farther from the blower section (16).

[0120] According to this embodiment, water that falls on the upper surface of the partition member (80, 80A) flows downward, which is advantageous in that water is less likely to accumulate on the upper surface of the partition member (80, 80A).

[0121] The charge / discharge device (1) of a sixth aspect is the charge / discharge device (1) of any one of the first to fifth aspects, further including a base part (9) attached to the lower surface of the housing (2) and placed on an installation surface (100). An internal space (Sp6) of the base part (9) communicates with the outside. A first ventilation port (351) is provided on the lower surface of the housing (2) at a position facing the internal space (Sp6) of the base part (9).

[0122] According to this embodiment, water that falls below the ventilation passage (21) passes through the first ventilation opening (351) and falls into the internal space (Sp6) of the base portion (9), thereby reducing the possibility of water accumulating at the bottom of the ventilation passage (21).

[0123] In the seventh aspect of the charge / discharge device (1) of any one of the first to sixth aspects, the first ventilation opening (351) is divided into a plurality of small holes (355) by a plurality of grid members (354) arranged in a predetermined direction.

[0124] According to this embodiment, the plurality of lattice members (354) provided in the first ventilation opening (351) can reduce the possibility of foreign objects such as stones and fallen leaves entering the first ventilation opening (351).

[0125] In the charge / discharge device (1) of the eighth aspect, in any one of the first to seventh aspects, the mounting member (17) that holds the blower (16) is separated from the partition members (80, 80A). The mounting member (17) and the partition members (80, 80A) are separately attached to the inner wall of the ventilation passage (21).

[0126] According to this embodiment, with the partition members (80, 80A) attached to the inner wall of the air passage (21), only the attachment member (17) that holds the blower section (16) can be replaced.

[0127] The charge / discharge device (1) of a ninth aspect is the charge / discharge device (1) of any one of the first to eighth aspects, further including a heat dissipation member (7) thermally coupled to a heat-generating component of the power conversion circuit (14). The heat dissipation member (7) is disposed in the ventilation passage (21).

[0128] According to this embodiment, the cooling effect of the power conversion circuit (14) can be improved.

[0129] In the charge / discharge device (1) of the tenth aspect, in the ninth aspect, the air blower (16) is arranged below the heat dissipation member (7) in the ventilation passage (21).

[0130] According to this embodiment, the cooling effect of the power conversion circuit (14) can be improved.

[0131] The configurations according to the second to tenth aspects are not essential for the charge / discharge device (1) and can be omitted as appropriate. [Explanation of symbols]

[0132] 1 Charge / discharge device 2. Case 7 Heat dissipation material 8 Bulkhead 9 Base 14 Power Conversion Circuit 16. Blower 17 Mounting material 21 Ventilation duct 49 Second Vent 80,80A Partition material 100 Installation surface 351 First Vent 354 Lattice members GP1, GP2 gap Sp1 Containment Space Sp6 interior space

Claims

1. a housing to be installed on an installation surface; a power conversion circuit housed in the housing and performing power conversion for charging and discharging; a blower unit, The housing includes an accommodation space for accommodating the power conversion circuit and a ventilation path for allowing air to flow therethrough. the ventilation path is a flow path through which air flows between a first ventilation port provided in a lower portion of the housing and a second ventilation port provided in an upper portion of the housing, The air blower is disposed in the ventilation passage, The housing is provided with a partition member that closes at least a part of a space between an inner wall of the ventilation passage and the air blower, The partition member is arranged with a gap through which air flows provided between the inner wall of the ventilation passage and the partition member and / or between the blower unit and the partition member. Charge / discharge device.

2. The gap is provided both between the inner wall of the ventilation passage and the partition member and between the blower unit and the partition member. The charging / discharging device according to claim 1 .

3. When the housing is placed on the placement surface, the upper surface of the partition member is inclined obliquely with respect to a horizontal plane. The charging / discharging device according to claim 1 .

4. The housing is provided with two of the partition members, The air blowing unit is disposed between the two partition members. The charging / discharging device according to claim 1 .

5. Each of the two partition members is disposed in the ventilation passage such that a first end closer to the blower unit is positioned lower than a second end farther from the blower unit. The charging / discharging device according to claim 4.

6. a base portion attached to a lower surface of the housing and placed on the installation surface; The internal space of the base portion is in communication with the outside, the first ventilation port is provided on the lower surface of the housing at a position facing the internal space of the base portion; The charging / discharging device according to claim 1 .

7. The first ventilation port is divided into a plurality of small holes by a plurality of lattice members arranged in a predetermined direction. The charging / discharging device according to claim 1 .

8. The mounting member that holds the air blower unit and the partition member are separated from each other, The mounting member and the partition member are separately attached to the inner wall of the ventilation passage. The charging / discharging device according to claim 1 .

9. a heat dissipation member thermally coupled to a heat-generating component included in the power conversion circuit; The heat dissipation member is disposed in the ventilation passage. The charging / discharging device according to claim 1 .

10. The air blower is disposed below the heat dissipation member in the ventilation passage. The charging / discharging device according to claim 9.

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