JP2017005000A - Cabinet and power storage system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabinet which enables improvement of reliability of conduction between a storage box and a lid.SOLUTION: A cabinet 1 comprises: a storage box 2 having an opening 271 formed on a front surface and housing an electric device 101; a roof board 310 which is arranged spaced away from a ceiling board 220 of the storage box 2 in an upward direction; and a lid 4 covering front sides of the storage box 2 and the roof board 310. The storage box 2 has a first groove part 275 which is formed along the front surface, extends in a cross-wise direction, and opens upward. The roof board 310 has a second groove part 311 which is formed above the first groove part 275 and opens upward. The lid 4 has an upper piece 421 covering the upper side of the second groove part 311.SELECTED DRAWING: Figure 3

Description

  The present invention generally relates to a cabinet and a power storage system using the same, and more particularly to a cabinet for storing an electric device and a power storage system using the same.

  DESCRIPTION OF RELATED ART Conventionally, the installation equipment provided with the housing | casing (cabinet) which accommodates an electric apparatus and installed outdoors is known (for example, refer patent document 1). In the cabinet of Patent Document 1, a draining groove is formed around an opening of a main body (storage box), and a cover (lid) is attached so as to cover the opening and the draining groove.

JP-A-2015-79893

  Since the cabinet accommodates electrical devices, higher waterproofness has been desired.

  This invention is made | formed in view of the said reason, The objective is to provide the cabinet which can improve waterproofness, and an electrical storage system using the same.

  The cabinet according to the present invention includes a storage box in which an opening is formed on one surface and stores an electric device, a roof plate disposed away from the ceiling plate of the storage box, and the one surface side of the storage box. A lid covering the storage box and the roof plate, the storage box having a first groove formed above the opening along the one surface and opening upward, the roof plate and the lid, One of the two has a second groove part formed above the first groove part and opened upward, and the other of the roof plate and the lid has an upper piece covering the upper part of the second groove part. And

  The power storage system of the present invention includes the cabinet, a storage battery module stored in the storage box as the electrical device, and a charge / discharge device that is stored in the storage box as the electrical device and controls charging / discharging of the storage battery module. It is characterized by providing.

  In this invention, there exists an effect that the reliability of conduction | electrical_connection between a storage box and a lid | cover can be improved.

It is a perspective view of the state where the lid and roof cover in the cabinet and power storage system of an embodiment were removed. FIG. 2A is a front view of the cabinet and the power storage system of the embodiment. FIG. 2B is a side view of the cabinet and the power storage system of the embodiment. FIG. 2C is a rear view of the cabinet and the power storage system of the embodiment. It is sectional drawing which expanded a part in the cabinet of embodiment. FIG. 4A is an enlarged perspective view of a part of the state where the mounting base in the cabinet of the embodiment is provided. FIG. 4B is an enlarged perspective view of a part of the cabinet of the embodiment with the mounting base removed. It is the perspective view which turned upside down the mounting base of embodiment. It is sectional drawing which expanded a part in the modification of the cabinet of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described in the following embodiments, the ratios of the sizes and thicknesses of the constituent elements do not necessarily reflect actual dimensional ratios.
(Embodiment)
Hereinafter, the cabinet 1 which concerns on this embodiment is demonstrated with reference to FIGS. However, the configuration described below is only an example of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  The cabinet 1 of this embodiment is a metal cabinet that houses the electrical device 101. The cabinet 1 houses a storage battery module 102 and a charge / discharge device 103 as an electric device 101 and is used in a power storage system 100 provided in a detached house. The directions used in the following description will be described by defining the vertical direction in FIG. 2A as the vertical direction, the horizontal direction in FIG. 2A as the horizontal direction, and the horizontal direction in FIG.

  The cabinet 1 of the present embodiment includes a storage box 2 in which an opening 271 is formed on the front surface for storing the storage battery module 102 and the charging / discharging device 103, a roof cover 3 covering the upper side of the storage box 2, and the storage box 2 and the roof cover. 3 and a lid 4 that covers the front of 3.

  Each of the plurality (three) of storage battery modules 102 has a plurality of storage batteries (for example, lithium ion batteries) connected in series or in parallel. The storage battery module 102 has a configuration including only a storage battery, a sensor such as a temperature sensor, a memory storing characteristic data of the storage battery, a monitoring control unit that performs charge / discharge control and abnormality monitoring of the storage battery, and transmits information. The communication section may be provided.

  The charging / discharging device 103 is configured by a power conditioner that is electrically connected between the plurality of storage battery modules 102 and the indoor wiring and performs power conversion, and controls charging / discharging of the storage battery module 102. The charging / discharging device 103 converts the AC power supplied from the commercial power supply through the indoor wiring into DC power and charges the storage battery module 102. In addition, the charging / discharging device 103 converts the DC power output from the storage battery module 102 into AC power, and supplies the AC power to the electric load through the indoor wiring.

  The storage box 2 is formed in a rectangular parallelepiped shape in which a rectangular opening 271 is provided on the front surface. The storage box 2 is installed in a state where a rear plate portion 250 is opposed to an outer wall of a building such as a detached house and a gap is opened between the outer wall of the building and the rear plate portion 250. The storage box 2 is placed on a box-shaped pedestal 200 and installed at an installation location.

  The internal space of the storage box 2 is divided into a first storage chamber 241 on the right side and a second storage chamber 242 on the left side by a partition wall 230 formed from the bottom plate 210 to the ceiling plate 220. Further, the second storage chamber 242 on the left side is divided into an upper storage chamber 243 and a lower storage chamber 244 by a horizontal rail 231 provided substantially at the center in the vertical direction in the internal space of the storage box 2.

  The charging / discharging device 103 is arranged at a position above the first storage chamber 241. The charging / discharging device 103 includes a circuit board on which a circuit that performs power conversion is formed, and a rectangular tube-like cover 104 that houses members such as the circuit board. The rear wall of the cover 104 is composed of a plate-shaped heat sink 105 that is thermally coupled to a circuit component (for example, a switching element or a coil component) mounted on the circuit board (see FIG. 3). The heat sink 105 is disposed away from the rear plate portion 250 of the storage box 2, and forms a duct 245 through which air can flow in the vertical direction between the heat sink 105 and the rear plate portion 250. Further, the ceiling plate 220 is formed with a plurality of through holes 221 at portions facing the duct 245. The plurality of through-holes 221 are formed side by side in the left-right direction, and a rising piece 222 that protrudes upward is formed over the entire periphery of the edge of each through-hole 221. The rising piece 222 can be formed, for example, around the through hole 221 by burring or the like. And the circuit component with which the charging / discharging apparatus 103 is provided radiates heat by exchanging heat with the air inside the duct 245 via the heat sink 105. Further, the warmed air inside the duct 245 rises by convection and is discharged to the outside of the storage box 2 through the through hole 221. Thereby, the heat which generate | occur | produces from the charging / discharging apparatus 103 can be thermally radiated efficiently, and the temperature rise in the inside of the storage box 2 is suppressed.

  In the present embodiment, the space below the charging / discharging device 103 in the first storage chamber 241 is an external wiring space, and the external wiring that electrically connects the indoor wiring and the charging / discharging device 103 is routed. Is done. The bottom plate 210 of the storage box 2 is provided with a through hole 211 penetrating in the vertical direction. The external wiring is inserted into the pedestal 200 through an opening 201 provided on the rear side of the pedestal 200, for example, and is introduced into the storage box 2 through a through hole 211 provided in the bottom plate 210. Then, the external wiring is connected to the charging / discharging device 103, whereby the charging / discharging device 103 and the indoor wiring are electrically connected.

  In the upper storage chamber 243 and the lower storage chamber 244 of the second storage chamber 242, a storage battery storage space in which the storage battery module 102 can be stored is provided. In the upper storage chamber 243, two storage battery modules 102 are stored side by side in the front-rear direction, and in the lower storage chamber 244, one storage battery module 102 is stored. In addition, in each of the upper storage chamber 243 and the lower storage chamber 244, two mounting bases 260 are arranged with a gap in the left-right direction. The mounting base 260 is formed by bending a sheet metal, and is fixed to the bottom plate 210 and the horizontal rail 231 with screws. The storage battery module 102 is mounted on the storage box 2 by, for example, fixing a metal fitting fixed to the storage battery module 102 to the mounting base 260 with a screw or the like in a state of being placed across the two mounting bases 260. Yes. And each of the some storage battery module 102 is electrically connected with the charging / discharging apparatus 103 via internal wiring.

  Here, through holes 212 for draining water are formed in the bottom plate 210 of the storage box 2 (see FIG. 4B), and the mounting base 260 fixed to the bottom plate 210 is disposed so as to close the through holes 212. (See FIG. 4A). As shown in FIG. 5, the mounting base 260 integrally includes a top plate 261, a pair of leg pieces 262, and a pair of bottom covers 263. The top plate 261 is formed in a rectangular plate shape on which the storage battery module 102 is placed. The pair of leg pieces 262 are formed so as to protrude downward from both left and right ends of the top plate 261. The pair of bottom covers 263 are formed so as to protrude away from the lower ends of the pair of leg pieces 262. The bottom cover 263 is formed in a rectangular plate shape, and a linear concave groove 264 is provided on the lower surface facing the bottom plate 210. The concave groove 264 is formed by recessing a part of the lower surface of the bottom cover 263, and the mounting base 260 is fixed to the bottom plate 210 so that a part of the concave groove 264 faces the through hole 212 in the vertical direction. The The concave groove 264 is formed so that one end is open, in other words, one end is opened between the bottom plate 210 and the bottom cover 263, and the other end is communicated with the through hole 212 of the bottom plate 210.

  The storage box 2 includes a side plate portion 272 that protrudes forward over the entire circumference of the opening portion 271, and a flange 273 that protrudes away from the opening portion 271 over the entire circumference from the front end of the side plate portion 272. The front plate portion 270, the side plate portion 272, and the flange 273 of the storage box 2 form a groove 274 having a U-shaped cross section over the entire periphery of the opening portion 271. Note that the upper side portion of the groove 274 corresponds to the first groove portion 275. That is, the first groove portion 275 is a groove formed by the upper side portions of the front plate portion 270, the side plate portion 272, and the flange 273, and is formed above the opening portion 271 along the front surface of the storage box 2. It extends in the direction and opens upward, and functions as a draining groove.

  A roof cover 3 that covers the entire ceiling plate 220 of the storage box 2 is provided above the storage box 2. The roof cover 3 includes a rectangular roof plate 310 disposed above and separated from the ceiling plate 220, a pair of side plates 320 projecting downward from both left and right ends of the roof plate 310, and a rear end of the roof plate 310. And a rear plate 330 protruding downward.

  The roof board 310 is formed such that the left and right dimensions and the front and rear dimensions are substantially the same as the ceiling board 220, and a second groove 311 is provided at the front end portion over the entire length in the left and right directions. The 2nd groove part 311 is formed so that it may extend in the left-right direction and may open upwards, and functions as a draining groove. Specifically, the second groove portion 311 includes a pair of side pieces 312 that extend in the left-right direction and face each other in the front-rear direction, and a bottom piece 313 that connects the lower ends of the pair of side pieces 312. Yes.

  In addition, the upper surface of the roof plate 310 is formed in a shape that decreases as the distance from the second groove 311 increases. Specifically, the upper surface of the roof plate 310 is formed as an inclined surface that is inclined downward toward the rear, and the rear end is located below the front end. In addition, although the inclination angle is set to 2 degree | times on the upper surface of the roof board 310 of this embodiment, an inclination angle is not limited to this numerical value.

  The roof cover 3 is attached to the storage box 2 using three L-shaped brackets 280 provided on the upper surface of the ceiling plate 220. Each of the pair of side plates 320 and the rear plate 330 of the roof cover 3 is formed with a through hole through which a screw is passed. 2 is attached. The ceiling plate 220 is provided with a spacer 281 that keeps a distance from the roof plate 310.

  In addition, a plurality of through holes 331 are formed in the rear plate 330 as vent holes side by side in the left-right direction (see FIG. 2C). A concave portion 332 that is recessed forward is formed in the lower portion of the edge of each through hole in the rear plate 330.

  The lid 4 has a flat rectangular parallelepiped shape with an open rear surface, and is disposed so as to cover the front of the storage box 2 and the roof plate 310. The lid 4 includes a rectangular plate-like front plate portion 410, a side plate portion 420 protruding rearward from the edge of the front plate portion 410, and a flange 430 protruding in a direction approaching the opening 271 from the rear end of the side plate portion 420 (FIG. 3). See). The front plate portion 410 has a horizontal dimension that is substantially the same as a horizontal dimension of the storage box 2, and a vertical dimension that is substantially the same as the dimension from the roof plate 310 of the roof cover 3 to the bottom plate 210 of the storage box 2. It is formed in the same way. That is, the front plate portion 410 covers the opening 271 of the storage box 2 and the front side of the space between the ceiling plate 220 and the roof plate 310.

  A plurality of through holes 411 through which screws are passed are formed in the front plate portion 410 of the lid 4, and screw holes to which screws are coupled are formed in the flange 273 of the storage box 2. Then, the lid 4 is attached to the storage box 2 by the screw passing through the through hole 411 of the lid 4 being coupled to the screw hole of the storage box 2. A packing is preferably provided between the flange 273 of the storage box 2 and the front plate portion 410 of the lid 4.

  Here, a portion of the side plate portion 420 of the lid 4 that protrudes rearward from the upper end of the front plate portion 410 is referred to as an upper piece 421, and a portion of the flange 430 that is formed downward from the rear end of the upper piece 421 is a hanging piece 431. And When the lid 4 is attached to the storage box 2, the upper piece 421 covers the upper side of the second groove portion 311, and the hanging piece 431 is fitted into the second groove portion 311. The portion excluding the upper piece 421 in the side plate portion 420 of the lid 4 covers the portion excluding the first groove portion 275 in the groove 274 of the storage box 2. Further, a portion of the flange 430 of the lid 4 excluding the hanging piece 431 is fitted into a portion of the groove 274 of the storage box 2 excluding the first groove portion 275.

  Thus, in the cabinet 1 of the present embodiment, the second groove portion 311 provided in the roof cover 3 is located above the first groove portion 275 provided in the storage box 2, and the opening of the second groove portion 311 is a lid. 4 is covered with an upper piece 421. That is, in the cabinet 1 of the present embodiment, the first groove portion 275 and the second groove portion 311 arranged in the vertical direction form a double ridge (draining groove). Therefore, the water to enter from above is received by the second groove portion 311 and drained from the side end of the second groove portion 311, so that the water reaching the first groove portion 275 is reduced. Thereby, it is suppressed that water permeates through the opening part 271 provided in the storage box 2, and waterproofness improves.

  Further, since the upper surface of the roof plate 310 is formed as an inclined surface that is inclined downward toward the rear, the water attached to the upper surface of the roof plate 310 flows backward according to the gradient of the upper surface of the roof plate 310. That is, since water flows away from the second groove 311, the water entering the second groove 311 is reduced, and the waterproofness of the cabinet 1 is further improved. Further, as a modified example of the roof plate 310, a shape in which a step which decreases toward the rear on the upper surface of the roof plate 310 may be provided. Even if it is a case where it comprises in this way, the water which enters into the 2nd groove part 311 is reduced, and the waterproofness of the cabinet 1 improves.

  Further, the ceiling plate 220 of the storage box 2 is provided with a through hole 221 as a ventilation hole, and a rising piece 222 is formed protruding upward over the entire circumference of the edge of the through hole 221. The rising piece 222 prevents water from entering the through hole 221 along the upper surface of the ceiling plate 220. In addition, since the roof cover 3 is disposed above the ceiling plate 220, for example, foreign matters such as fallen leaves are prevented from entering or blocking the through hole 221.

  Further, the ceiling plate 220 of the storage box 2 and the roof plate 310 of the roof cover 3 are arranged apart from each other, and a space is formed between the ceiling plate 220 and the roof plate 310. Thereby, for example, the occurrence of condensation on the inner surface of the storage box 2 (particularly the lower surface of the ceiling plate 220) is suppressed by heat generated from the circuit components of the charging / discharging device 103, for example. Further, a recess 332 is provided at the lower end portion of the edge of the through hole 331 provided in the rear plate 330 of the roof cover 3. The recess 332 increases the opening area on the rear surface of the rear plate 330 and opens upward on the front side of the rear plate 330, so that the exhaust efficiency can be further improved and the ingress of water can be further suppressed.

  In addition, since the lid 4 of this embodiment has the hanging piece 431 that fits into the second groove 311 provided in the roof cover 3, the lid 4 is attached to the storage box 2 when the lid 4 is attached to the storage box 2. The two grooves 311 can be hooked and temporarily held. Thereby, the operation | work which attaches the lid | cover 4 to the storage box 2 becomes easy. The lid 4 is configured to cover the front of the storage box 2 and the roof plate 310, and covers the opening 271 of the storage box 2 and the space between the ceiling plate 220 and the roof plate 310. Therefore, when the cabinet 1 is viewed from the front, the joint portion where the storage box 2, the lid 4, and the roof cover 3 are combined with each other cannot be seen, and the design property is prevented from being impaired.

  Further, a drain hole 212 is formed in the bottom plate 210 of the storage box 2 of the present embodiment, and the through hole 212 is covered with a bottom cover 263 in which a concave groove 264 is formed. The concave groove 264 is formed so that one end thereof opens between the bottom plate 210 and the bottom cover 263 and the other end communicates with the through hole 212. Thus, even if water enters the inside of the storage box 2 and accumulates on the bottom plate 210, the water accumulated on the bottom plate 210 is drained from the through hole 212 through the concave groove 264. Therefore, accumulation of water in the storage box 2 is suppressed. Further, since the through-hole 212 communicates with the position on the back side of the concave groove 264, it is possible to prevent dust and the like from entering the storage box 2 through the through-hole 212. In this embodiment, the shape of the concave groove 264 is a straight line, but the concave groove 264 may be a shape curved on an arc or a shape having a crank-shaped bent portion in the middle. May be.

  In the present embodiment, the second groove portion 311 located above the first groove portion 275 is configured to include the roof plate 310, but the lid 4 includes the second groove portion 311A as shown in FIG. Also good. In the modification shown in FIG. 6, a second groove 311A is provided at the rear end of the upper side portion of the side plate 420 of the lid 4, and the roof plate 310 includes an upper piece 421A that covers the second groove 311A. Even in this case, the second groove 311A is located above the first groove 275, and water can be prevented from entering through the opening 271 provided in the storage box 2. It becomes.

  As described above, the cabinet 1 of this embodiment includes the storage box 2, the roof plate 310, and the lid 4. The storage box 2 has an opening 271 formed on one surface (front surface) and stores the electric device 101. The roof plate 310 is disposed away from the ceiling plate 220 of the storage box 2 upward. The lid 4 covers the storage box 2 and the roof plate 310 on one side (front side) of the storage box 2. Further, the storage box 2 has a first groove portion 275 that is formed above the opening portion 271 along one surface (front surface) and opens upward. One of the roof plate 310 and the lid 4 has a second groove 311 (311A) formed above the first groove 275 and opened upward. The other of the roof plate 310 and the lid 4 has an upper piece 421 (421A) that covers the upper side of the second groove 311.

  In addition, the power storage system 100 of the present embodiment includes the cabinet 1, the storage battery module 102 that is stored in the storage box 2 as the electric device 101, and the storage battery module 102 that is stored in the storage box 2 as the electric device 101. And a charging / discharging device 103 that controls the above.

  With the above configuration, the cabinet 1 and the power storage system 100 are provided in the storage box 2 because the first groove portion 275 and the second groove portion 311 arranged in the vertical direction form a double trough (draining groove). Infiltration of water through the opening 271 is suppressed and waterproofness is improved.

  The roof plate 310 has a second groove portion 311, and the lid 4 has an upper piece 421 and a hanging piece 431 that is formed downward from the upper piece 421 and fits in the second groove portion 311. With the above configuration, the lid 4 can be temporarily held by being hooked on the second groove 311, and workability for attaching the lid 4 to the storage box 2 is improved.

  The storage box 2 includes a through hole 221 formed in the ceiling plate 220 and a rising piece 222 formed to protrude upward over the entire circumference of the edge of the through hole 221. With the above configuration, the water that has entered the roof cover 3 is prevented from entering the through hole 221 through the ceiling plate 220 and the waterproofness is improved.

  In addition, the upper surface of the roof plate 310 has a shape that decreases as the distance from the second groove 311 increases. With the above configuration, the water adhering to the upper surface of the roof plate 310 flows away from the second groove 311, so that the water entering the second groove 311 is reduced and the waterproof property is improved.

  The storage box 2 includes a through hole 212 formed in the bottom plate 210, a bottom cover 263 that overlaps the upper side of the bottom plate 210 and covers the through hole 212, and a concave groove 264 formed on the lower surface of the bottom cover 263. The recessed groove 264 communicates with the through hole 212 and has one end opening between the bottom plate 210 and the bottom cover 263. With the above configuration, it is possible to suppress water from being accumulated inside the storage box 2 and further to prevent foreign matters such as dust from entering the storage box 2 through the through holes 212.

DESCRIPTION OF SYMBOLS 1 Cabinet 100 Power storage system 101 Electric apparatus 102 Storage battery module 103 Charging / discharging apparatus 2 Storage box 210 Bottom plate 212 Through hole 220 Ceiling plate 221 Through hole 222 Standing piece 263 Bottom cover 264 Concave groove 271 Opening portion 275 First groove portion 310 Roof plate 311 , 311A Second groove 4 Lid 421, 421A Upper piece 431 Hanging piece

Claims (6)

A storage box in which an opening is formed on one side to store the electrical device;
A roof plate disposed away from the ceiling plate of the storage box; and
A lid covering the storage box and the roof plate on the one surface side of the storage box;
The storage box has a first groove formed above the opening along the one surface and opening upward,
One of the roof plate and the lid has a second groove portion formed above the first groove portion and opened upward,
The other of the roof plate and the lid has an upper piece that covers the upper side of the second groove portion. The roof plate has the second groove portion,
The cabinet according to claim 1, wherein the lid includes the upper piece and a hanging piece that is formed downward from the upper piece and fits in the second groove portion. The said storage box has the through-hole formed in the said ceiling board, and the standing piece formed by protruding upward over the perimeter of the edge of the said through-hole. The Claim 1 or 2 characterized by the above-mentioned. cabinet. The upper surface of the said roof board is a shape which falls as it leaves | separates from the said 2nd groove part. The cabinet of any one of Claims 1-3 characterized by the above-mentioned. The storage box has a through hole formed in the bottom plate, a bottom cover that overlaps the upper side of the bottom plate and covers the through hole, and a concave groove formed in the lower surface of the bottom cover,
The cabinet according to any one of claims 1 to 4, wherein the concave groove communicates with the through hole, and one end thereof is open between the bottom plate and the bottom cover. The cabinet according to any one of claims 1 to 5,
A storage battery module stored in the storage box as the electrical device;
A power storage system comprising: a charge / discharge device that is housed in the storage box as the electrical device and controls charge / discharge of the storage battery module.

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