Battery storage box and battery transport device

Abstract

A storage battery storage box and a storage battery transport device are provided that allow a conversion unit to be used in accordance with the user's usage situation. [Solution] A storage battery housing box (10) includes a housing (1) and an attachment section (3). The housing (1) has a housing section (2) that houses a storage battery. A conversion section (A1) is attached to the attachment section (3). The conversion section (A1) performs at least one of converting the power output by the storage battery into desired discharge power and outputting it, and converting input power into charging power for the storage battery and outputting it to the storage battery.

Description

[Technical Field]

[0001] The present disclosure generally relates to a battery housing and a battery transport device. More specifically, the present disclosure relates to a battery housing having a housing portion for housing a battery, and a battery transport device including the same. [Background technology]

[0002] Patent Document 1 discloses a storage battery management system including a storage battery, a power control unit, an input unit, and an output unit. The power control unit includes a circuit for controlling charging and discharging of the storage battery. The input unit receives first AC power, which is AC power obtained from a power grid. The output unit is electrically connected to a load. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-86108 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it may be desirable to use a conversion unit that converts the power output by the storage battery or converts the input power into charging power for the storage battery, depending on the usage situation of the user who uses the storage battery housing box that houses the storage battery.

[0005] An object of the present disclosure is to provide a storage battery housing box and a storage battery transport device that can use a conversion unit according to the user's usage situation. [Means for solving the problem]

[0006] A storage battery housing box according to one aspect of the present disclosure includes a housing and an attachment portion. The housing has a housing portion that houses a storage battery. A conversion portion is attached to the attachment portion. The conversion portion performs at least one of converting power output by the storage battery into desired discharge power and outputting the power, and converting input power into charging power for the storage battery and outputting the power to the storage battery.

[0007] A battery transport device according to one aspect of the present disclosure includes the battery housing box described above and a carrier. The carrier has a base on which the battery housing box is placed, a handle connected to the base, and wheels provided at the ends of the handle. When the battery housing box is placed on the base, the attachment portion is located on the wheel side when viewed from the normal direction of the surface of the base on which the battery housing box is placed. [Effects of the Invention]

[0008] According to the present disclosure, there is an advantage that the conversion unit can be used in accordance with the user's usage situation. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of the appearance of a storage battery housing box according to this embodiment. [Figure 2] FIG. 2 is a block diagram showing a schematic configuration of a relay unit included in the battery housing box. [Figure 3] FIG. 3 is an external perspective view of the battery housing box of the same as above, with the front wall, left wall, and right wall indicated by two-dot chain lines, as viewed from a different direction than in FIG. [Figure 4] FIG. 4 is a plan view of the battery housing box. [Figure 5] FIG. 5 is a bottom view of the battery housing box. [Figure 6] FIG. 6 is a cross-sectional view of the battery housing box taken along line II in FIGS. 4 and 5. FIG. [Figure 7] FIG. 7 is a perspective view of the appearance of the storage battery transport device of this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments and modifications described below are merely examples of the present disclosure. The present disclosure is not limited to the embodiments and modifications, and various modifications other than these embodiments and modifications are possible depending on the design, etc., as long as they do not deviate from the technical concept of the present disclosure. The drawings described in the following embodiments and modifications are schematic drawings, and the ratios of the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0011] (Embodiment) (1) Overview An overview of a storage battery housing box 10 according to this embodiment will be described below with reference to FIG.

[0012] As shown in FIG. 1, the battery housing box 10 according to this embodiment includes a housing 1 and an attachment portion 3. The housing 1 has a housing portion 2 that houses a storage battery B1 (see FIG. 2). The storage battery B1 is a secondary battery that can be repeatedly charged and discharged. The storage battery B1 is, for example, a lithium-ion battery.

[0013] 1, a conversion unit A1 is attached to the attachment unit 3. The conversion unit A1 performs at least one of converting the power output by the storage battery B1 into desired discharge power and outputting the power, and converting input power into charging power for the storage battery B1 and outputting the power to the storage battery B1.

[0014] As described above, the storage battery housing box 10 of this embodiment can be equipped with a conversion unit A1 that can convert the required discharge power or charge power according to the user's usage situation. That is, the storage battery housing box 10 of this embodiment has the advantage that the conversion unit A1 can be used in accordance with the user's usage situation.

[0015] (2) Detailed configuration (2-1) Battery storage box The detailed configuration of the battery housing box 10 of this embodiment will be described below with reference to FIGS.

[0016] Note that the terms "upper," "lower," "left," "right," "front," and "rear" used in this disclosure merely represent the relative positional relationships of the components of the battery housing box 10 and are not intended to limit the direction in which the battery housing box 10 is used. The battery housing box 10 may be used in an orientation in which "lower" used in this disclosure refers to, for example, upper, front, rear, left, or right. Also, although arrows representing upper, lower, left, right, and front and rear are shown in Figures 1, 3, etc., these arrows are merely used for explanatory purposes and do not have any physical substance.

[0017] The battery housing box 10 of this embodiment is configured to be able to house multiple (four) batteries B1. As shown in Figures 1, 3, and 6, the battery housing box 10 of this embodiment includes a housing 1, an attachment portion 3, a relay portion 4, a case 5, and a heat sink 6.

[0018] (2-1-1) Housing 1, the housing 1 of this embodiment is box-shaped and has a first side wall (rear wall) 11, a second side wall (right wall) 12, a third side wall (left wall) 13, a fourth side wall (upper wall) 14, a fifth side wall (lower wall) 15, and a sixth side wall (front wall) 16. The first side wall 11 corresponds to the side wall of the present disclosure.

[0019] The second side wall 12 and the third side wall 13 are adjacent to the first side wall 11. More specifically, the second side wall 12 is adjacent to the right end of the first side wall 11, and the third side wall 13 is adjacent to the left end of the first side wall 11. Similarly, the fourth side wall 14 and the fifth side wall 15 are adjacent to the first side wall 11. More specifically, the fourth side wall 14 is adjacent to the upper end of the first side wall 11, and the fifth side wall 15 is adjacent to the lower end of the first side wall 11.

[0020] The first side wall 11 and the sixth side wall 16 face each other in the front-rear direction. Similarly, the second side wall 12 and the third side wall 13 face each other in the left-right direction. The fourth side wall 14 and the fifth side wall 15 face each other in the up-down direction. In other words, the housing 1 of this embodiment is a substantially rectangular box shape.

[0021] In this embodiment, each of the first side wall 11 and the fifth side wall 15 is made of wood. Note that "wood" in this disclosure includes solid wood obtained from various trees, veneer, plywood, veneer (single board), laminated wood, or printed plywood, or a wood material formed by laminating and gluing two or more of these types of wood. Because the fifth side wall 15 is made of wood, this has the effect of making it easier to attach the fifth side wall 15 to the mounting base 201 (see FIG. 7 ) of the carrier 20 (described later) using screws, nails, or the like. This has the advantage of making it easier to place the storage battery housing box 10 on the mounting base 201.

[0022] On the other hand, in this embodiment, the second side wall 12, the third side wall 13, the fourth side wall 14, and the sixth side wall 16 are each formed of, for example, a resin material or a metal material. Note that the second side wall 12, the third side wall 13, the fourth side wall 14, and the sixth side wall 16 may each be formed of a material other than a resin material or a metal material.

[0023] (Mounting part) The conversion unit A1 is attached to the attachment unit 3. In this embodiment, the attachment unit 3 is the first side wall 11. That is, the first side wall 11, which is part of the outer surface of the housing 1, itself functions as the attachment unit 3. That is, the conversion unit A1 is attached to the first side wall 11, which is part of the outer surface of the housing 1.

[0024] A recess 111 is formed in the first side wall 11, which is the mounting portion 3, and the conversion portion A1 is attached to the recess 111. More specifically, the conversion portion A1 is attached to a bottom surface 1111 of the recess 111 formed in the first side wall 11. This configuration has the advantage that it is possible to prevent water (for example, rainwater) from getting on the conversion portion A1 when the storage battery housing box 10 is placed outdoors, for example.

[0025] The recess 111 is connected to each of the second side wall 12 and the third side wall 13. That is, the recess 111 is formed in the first side wall 11 across the left-right direction. More specifically, the recess 111 is formed in the first side wall 11 so as to be connected to both the left end and the right end of the first side wall 11 along the left-right direction. The above configuration has the effect of facilitating air flow from each of the second side wall 12 and the third side wall 13 into the recess 111. As a result, there is an advantage in that the conversion unit A1 can be easily cooled.

[0026] As described above, the first side wall 11, which is the mounting portion 3, is made of wood. With this configuration, the conversion unit A1 can be attached to any position on the outer surface of the housing 1 (in this embodiment, the bottom surface 1111 of the recess 111 of the first side wall 11) using screws, nails, or the like. This has the advantage of improving the degree of freedom in the position (i.e., layout) at which the conversion unit A1 is arranged.

[0027] (Storage section) The housing 1 has a plurality of storage sections 2 that accommodate the storage batteries B1. More specifically, each of the plurality of storage sections 2 accommodates one of the plurality of storage batteries B1. In this embodiment, the plurality of storage sections 2 are formed on a fourth side wall (top wall) 14 of the housing 1. The number of storage sections 2 in this embodiment is, for example, four.

[0028] 3, each of the plurality of storage sections 2 is a recess formed along the outer shape of the storage battery B1 in the thickness direction (vertical direction) of the fourth side wall 14. That is, the storage direction D1, which is the direction in which the storage battery B1 is stored in each of the plurality of storage sections 2, is the thickness direction (vertical direction) of the fourth side wall 14. In this embodiment, each of the plurality of storage sections 2 is substantially rectangular parallelepiped-shaped.

[0029] Each of the multiple storage sections 2 may accommodate only a portion (lower portion) of the storage battery B1, or may accommodate the entire storage battery B1. In other words, when the storage battery B1 is accommodated in any one of the multiple storage sections 2, only a portion (lower portion) of the side surface of the storage battery B1 may be covered by the storage section 2 accommodating the storage battery B1, or the entire side surface may be covered. In other words, when the storage battery B1 is accommodated in any one of the multiple storage sections 2, a portion (upper portion) of the side surface of the storage battery B1 may not be covered by the storage section 2 accommodating the storage battery B1 and may be exposed.

[0030] 3 and 4, each of the plurality of storage sections 2 has a connection section 21 to which a connection terminal (not shown) of the storage battery B1 is electrically connected when the storage battery B1 is stored therein. The connection section 21 is provided on the bottom surface 23 of the storage section 2, as shown in Fig. 4. More specifically, as shown in Fig. 6, the connection section 21 is provided so as to pass through the bottom surface 23 of the storage section 2, with one end (upper end) 211 of the connection section 21 exposed inside the storage section 2 and the other end (lower end) 212 of the connection section 21 stored inside the housing 1.

[0031] As shown in Fig. 3, a connector W21 of a cable W2 is inserted into the other end 212 of the connection portion 21, and the connection portion 21 is electrically connected to the cable W2. As shown in Figs. 3 and 6, a tip end of the cable W2 (the end opposite to the side where the connector W21 is provided) passes through an opening 51 (described later) provided in the case 5 and is electrically connected to the relay portion 4 covered by the case 5. That is, each of the multiple cables W2 electrically connects the connection portion 21 into which the connector W21 is inserted, among the connection portions 21 in each of the multiple housing portions 2, to the relay portion 4. Therefore, when the storage battery B1 is accommodated in any one of the multiple housing portions 2, the storage battery B1 is electrically connected to the relay portion 4 via the connection portion 21 of the housing portion 2 accommodating the storage battery B1 and the cable W2 into which the connector W21 is inserted.

[0032] (First through hole, second through hole) As shown in FIG. 4 , each of the multiple storage units 2 has a first through hole 22 that penetrates in the vertical direction (in the present embodiment, the up-down direction). The first through hole 22 corresponds to the through hole of the present disclosure. The first through hole 22 is provided in the bottom surface 23 of each of the multiple storage units 2. In the present embodiment, each of the multiple (four) storage units 2 has one first through hole 22. That is, the housing 1 of the present embodiment has four first through holes 22. With the above configuration, if water (e.g., rainwater) enters each of the multiple storage units 2, the water is discharged from each of the multiple storage units 2 through the first through hole 22. That is, the first through hole 22 functions as a drain hole for water that has entered each of the multiple storage units 2. This has the advantage of preventing water from accumulating in each of the multiple storage units 2.

[0033] The housing 1 has a second through hole 151 that is a through hole different from the first through hole 22 and penetrates along the vertical direction (in the present embodiment, the up-down direction). In the present embodiment, a plurality (four) of second through holes 151 are provided in the fifth side wall (bottom wall) 15 of the housing 1. With the above configuration, when water enters each of the plurality of storage sections 2 and is discharged from each of the plurality of storage sections 2 into the interior of the housing 1 through the first through hole 22, the water is discharged from the interior of the housing 1 through the second through hole 151. That is, the second through hole 151 functions as a drain hole for water that has entered the interior of the housing 1. This has the advantage of being able to prevent water from accumulating inside the housing 1.

[0034] 6, the second through hole 151 overlaps with at least a portion of the first through hole 22 in the vertical direction (the up-down direction in this embodiment). In this embodiment, the second through hole 151 overlaps with the entire first through hole 22 in the vertical direction. This configuration has the effect that, when water enters each of the multiple storage sections 2 and is discharged from each of the multiple storage sections 2 into the inside of the housing 1 through the first through hole 22, the water is more easily discharged from the inside of the housing 1 through the second through hole 151. This has the advantage of further preventing water from accumulating inside the housing 1.

[0035] (2-1-2) Relay section The relay unit 4 relays the electrical connection between the storage battery B1 housed in the storage unit 2 and the conversion unit A1 attached to the outer surface of the housing 1 by the attachment unit 3. The relay unit 4 of this embodiment relays the electrical connection between the storage battery B1 housed in each of the multiple storage units 2 and the conversion unit A1 attached to the first side wall 11, which is the attachment unit 3.

[0036] 2, the relay unit 4 has a parallel circuit 41 and a pair of connection units 42. In the following, it is assumed that the conversion unit A1 converts the power output from the plurality of storage batteries B1 into desired discharge power and outputs it to the load X1. That is, in the following, it is assumed that the conversion unit A1 is a conversion unit dedicated to discharge (a conversion unit used only for discharge).

[0037] The parallel circuit 41 connects in parallel the storage batteries B1 housed in each of the multiple storage sections 2. The parallel circuit 41 is electrically connected to the connection sections 21 in each of the multiple storage sections 2 via cables W2. Therefore, the parallel circuit 41 connects the storage batteries B1 in parallel by housing the storage batteries B1 in each of the multiple storage sections 2 and electrically connecting the connection terminals of the storage batteries B1 to the connection sections 21.

[0038] A backflow prevention diode 411 (see FIG. 2) is arranged between the parallel circuit 41 and each of the plurality of storage batteries B1. More specifically, the parallel circuit 41 has a backflow prevention diode 411 arranged between the parallel circuit 41 and each of the plurality of cables W2 electrically connected to the connection portion 21 of the housing portion 2 that houses the storage battery B1.

[0039] Each of the pair of connection parts 42 electrically connects the parallel circuit 41 and the input terminal of the conversion unit A1. One of the pair of connection parts 42 is a high-potential side connection part 42, which electrically connects the high-potential side of the parallel circuit 41 and the positive-side input terminal of the conversion unit A1. On the other hand, the other of the pair of connection parts 42 is a low-potential side (ground side) connection part 42, which electrically connects the low-potential side of the parallel circuit 41 and the negative-side input terminal of the conversion unit A1.

[0040] The pair of connectors 42 in this embodiment are inserted through insertion holes 112 (see FIG. 1) provided in the bottom surface 1111 of the recess 111 in the first side wall 11 and are exposed to the outside of the housing 1. A cable W1 is inserted into each of the pair of connectors 42 in the portion exposed to the outside of the housing 1, and the parallel circuit 41 and the input terminal of the conversion unit A1 are electrically connected via the cable W1. More specifically, the high-potential side connector 42 electrically connects the high-potential side of the parallel circuit 41 to the positive-side input terminal of the conversion unit A1 via one of the two cables W1. The low-potential side connector 42 electrically connects the low-potential side of the parallel circuit 41 to the negative-side input terminal of the conversion unit A1 via the other of the two cables W1.

[0041] The conversion unit A1 has two connection terminals A11 (see FIG. 1) that are electrically connected to the load X1. A power plug of the load X1 is inserted into each of the two connection terminals A11, and the conversion unit A1 is electrically connected to the load X1. That is, each of the two connection terminals A11 is an outlet (i.e., a power socket) configured to allow insertion of a power plug of the load X1.

[0042] 6, the relay unit 4 is disposed inside the housing 1 on the inside of the first side wall 11, which is the mounting portion 3. That is, the relay unit 4 is disposed inside the housing 1 between the first side wall 11, which is the mounting portion 3, and the plurality of storage units 2. This configuration has the advantage of making it easy to route the cables W1 and W2. That is, it has the advantage of making it easy to route the wiring for electrically connecting the storage battery B1 and the conversion unit A1 housed in each of the plurality of storage units 2.

[0043] As shown in Fig. 6, at least a portion of the relay unit 4 (parallel circuit 41) is configured by electronic components 44 mounted on a substrate 43. The substrate 43 is a printed wiring board having a conductor portion. The substrate 43 is disposed inside the housing 1, on the inner side of the first side wall 11, which is the mounting portion 3, via a heat sink 6, which will be described later.

[0044] The substrate 43 is disposed inside the housing 1 so that the thickness direction of the substrate 43 intersects (orthogonal in this embodiment) with an accommodation direction D1 (vertical direction) in which the storage battery B1 is accommodated in each of the plurality of accommodation sections 2. That is, the accommodation direction D1 in which the storage battery B1 is accommodated in each of the plurality of accommodation sections 2 intersects (orthogonal in this embodiment) with the thickness direction of the substrate 43. This configuration has the advantage that, even if water (for example, rainwater) gets into each of the plurality of accommodation sections 2, the water is less likely to splash on the substrate 43.

[0045] As shown in FIG. 6, the electronic components 44 and the board 43 are housed in a case 5. In this embodiment, the case 5 is a rectangular box. In this embodiment, an opening 51 is provided at the lower end of the front surface of the case 5. A plurality of cables W2 are inserted through the opening 51. The case 5 is made of, for example, a resin material or a metal material. However, the case 5 may be made of a material other than a resin material or a metal material.

[0046] (2-1-3) Heat sink The heat sink 6 thermally connects the substrate 43 to the recess 111 of the first side wall 11. That is, the heat sink 6 is thermally connected to both the substrate 43 and the recess 111 of the first side wall 11. In short, the substrate 43 is thermally connected to the recess 111 of the first side wall 11 via the heat sink 6. According to the above configuration, the heat sink 6 conducts heat generated in the electronic component 44 to the first side wall 11. This has the advantage of being able to dissipate the heat generated in the electronic component 44. Note that, in the present disclosure, "thermally connected" refers to a state in which two objects are in direct contact with each other or indirectly in contact with each other via another object, thereby transferring heat between the two objects by thermal conduction.

[0047] The first side wall 11 is formed of a material having a lower thermal conductivity than the heat sink 6. In other words, the heat sink 6 is formed of a material having a higher thermal conductivity than the first side wall 11. In this embodiment, since the first side wall 11 is formed of wood, the heat sink 6 is formed of a material having a higher thermal conductivity than wood. For example, the heat sink 6 is formed of a metal material such as aluminum or iron. This configuration has the advantage that heat generated by the electronic component 44 and conducted to the first side wall 11 by the heat sink 6 is less likely to be transmitted to the conversion unit A1 attached to the first side wall 11 (in the recess 111 thereof).

[0048] The heat sink 6 of this embodiment has a first heat sink 61 and a second heat sink 62. The first heat sink 61 is a rectangular parallelepiped member, while the second heat sink 62 is a rectangular plate member.

[0049] The first heat sink 61 is housed in the case 5, as are the electronic components 44 and the substrate 43. The first heat sink 61 is thermally connected to both the rear surface of the substrate 43 and the inner surface of the case 5. More specifically, the first heat sink 61 is thermally connected to both the upper end of the rear surface of the substrate 43 and the inner surface of the case 5.

[0050] On the other hand, the second heat sink 62 is sandwiched between the case 5 and the first side wall 11. The second heat sink 62 is thermally connected to both the outer surface of the case 5 and the inner surface of the first side wall 11. More specifically, the second heat sink 62 is thermally connected to both the outer surface of the case 5 and the upper end of the inner surface of the bottom surface 1111 of the recess 111 of the first side wall 11.

[0051] As described above, the heat sink 6 of this embodiment is thermally connected to both the substrate 43 and the recess 111 of the first side wall 11 via the case 5. More specifically, the heat sink 6 of this embodiment is thermally connected to both the upper end of the substrate 43 and the upper end of the recess 111 of the first side wall 11 via the case 5. That is, the heat sink 6 of this embodiment thermally connects the substrate 43 to the upper end of the recess 111 of the first side wall 11 via the case 5.

[0052] In this embodiment, the second heat sink 62 is thermally connected to the inner surface of the fourth side wall (upper wall) 14 in addition to the outer surface of the case 5 and the inner surface of the first side wall 11. That is, the heat sink 6 in this embodiment also thermally connects the substrate 43 to the fourth side wall 14. With this configuration, the heat sink 6 conducts the heat generated by the electronic components 44 to the fourth side wall 14. This has the advantage of allowing the heat generated by the electronic components 44 to be efficiently dissipated.

[0053] (2-2) Battery transport equipment Next, the detailed configuration of the storage battery transporting device 100 of this embodiment will be described with reference to FIG.

[0054] The storage battery transporting device 100 is a device for transporting the storage battery B1. A user can use the storage battery B1 at any desired location by moving the storage battery transporting device 100 to the desired location.

[0055] 7, the storage battery transport device 100 includes a storage battery housing box 10 and a carrier 20. The carrier 20 has a platform 201, a handle 202, and a pair of wheels 203.

[0056] The storage battery housing box 10 is placed on the mounting base 201. In this embodiment, the mounting base 201 is formed of U-shaped metal pipes and horizontal pipes that connect the tips of the U-shaped metal pipes. In this embodiment, the surface of the mounting base 201 on which the storage battery housing box 10 is placed is the surface surrounded by the U-shaped metal pipes and the horizontal pipes.

[0057] The handle 202 is connected to the mounting base 201. In this embodiment, the handle 202 is connected to the tip of a U-shaped metal pipe on the mounting base 201. In this embodiment, the handle 202 is formed by fixing two inverted U-shaped metal pipes 2021, 2022 in a vertically aligned position. A grip 222 is provided at the tip of the handle 202, which the user grips when moving the storage battery transport device 100 to a desired position. A pair of wheels 203 is provided at an end (lower end) 221 of the handle 202. The pair of wheels 203 are arranged side by side in the left-right direction.

[0058] When the storage battery housing box 10 is placed on the mounting base 201, the attachment unit 3 of the storage battery transporting device 100 is located on the wheel 203 side when viewed from the normal direction (i.e., the up-down direction) of the surface of the mounting base 201 on which the storage battery housing box 10 is placed. That is, in the storage battery transporting device 100 of this embodiment, the storage battery housing box 10 is placed on the mounting base 201 so that the first side wall 11, which is the attachment unit 3 and to which the conversion unit A1 is attached, is the surface of the outer surface of the housing 1 that faces the wheels 203 when viewed from the normal direction (i.e., the up-down direction) of the surface of the mounting base 201 on which the storage battery housing box 10 is placed. With this configuration, when a user moves the storage battery transporting device 100 to a desired position, the tip of the handle 202 (i.e., the grip portion 222) tilts backward with respect to the pair of wheels 203, so that the first side wall 11 to which the conversion unit A1 is attached faces downward. As a result, there is an advantage that water (for example, rainwater) can be prevented from getting on the conversion unit A1 when the user moves the storage battery transport device 100 to an arbitrary position.

[0059] (3) Advantages The battery housing box 10 of this embodiment includes a housing 1 and an attachment section 3. The housing 1 has a housing section 2 that houses a storage battery B1. A conversion section A1 is attached to the attachment section 3. This allows the battery housing box 10 of this embodiment to be equipped with a conversion section A1 that can convert the required discharge power or charge power depending on the user's usage situation. In other words, the battery housing box 10 of this embodiment has the advantage that the conversion section A1 can be used in accordance with the user's usage situation.

[0060] In the battery housing box 10 of this embodiment, the housing 1 is box-shaped and has a first side wall 11, and the mounting portion 3 is the first side wall 11. A recess 111 is formed in the first side wall 11, and the conversion portion A1 is mounted in the recess 111. This has the advantage of preventing water (for example, rainwater) from getting on the conversion portion A1 when the battery housing box 10 is placed outdoors, for example.

[0061] In the storage battery housing box 10 of this embodiment, the housing 1 has a second side wall 12 and a third side wall 13 adjacent to the first side wall 11. The recess 111 is connected to each of the second side wall 12 and the third side wall 13. This has the effect of making it easier for air to flow into the recess 111 from each of the second side wall 12 and the third side wall 13. As a result, there is an advantage in that the conversion unit A1 can be cooled more easily.

[0062] In the battery housing box 10 of this embodiment, the housing 1 has a plurality of housing sections 2. The relay section 4 has a parallel circuit 41 and a pair of connection sections 42. The parallel circuit 41 connects in parallel the storage batteries B1 housed in each of the plurality of housing sections 2. The pair of connection sections 42 electrically connect the parallel circuit 41 to the input terminals of the conversion section A1. This has the advantage that the user can use a plurality of storage batteries B1 connected in parallel.

[0063] In the battery housing box 10 of this embodiment, the housing 1 is box-shaped and has a first side wall 11, and the mounting portion 3 is the first side wall 11. The relay portion 4 is disposed inside the housing 1, on the inside of the first side wall 11, which is the mounting portion 3. This has the advantage that wiring for electrically connecting the storage batteries B1 housed in each of the multiple housing portions 2 to the conversion portion A1 can be easily performed.

[0064] In the battery housing box 10 of this embodiment, at least a portion of the relay unit 4 is configured by an electronic component 44 mounted on a substrate 43. The battery housing box 10 of this embodiment further includes a heat sink 6 that thermally connects the substrate 43 to the first side wall 11. As a result, the heat sink 6 conducts heat generated by the electronic component 44 to the first side wall 11. This has the advantage of allowing the heat generated by the electronic component 44 to be released.

[0065] In the battery housing box 10 of this embodiment, the first side wall 11 of the housing 1 is formed of a material with a lower thermal conductivity than the heat sink 6. This has the advantage that heat generated in the electronic component 44 and conducted to the first side wall 11 by the heat sink 6 is less likely to be transmitted to the conversion unit A1.

[0066] In the battery housing box 10 of this embodiment, at least a portion of the relay section 4 is configured by electronic components 44 mounted on a substrate 43. An accommodation direction D1, which is the direction in which the storage battery B1 is accommodated in each of the plurality of accommodation sections 2, intersects (orthogonal in this embodiment) the thickness direction of the substrate 43. This has the advantage that, even if water (for example, rainwater) gets into each of the plurality of accommodation sections 2, the water is less likely to get on the substrate 43.

[0067] In the storage battery housing box 10 of this embodiment, the first side wall 11, which is the mounting portion 3, is formed of wood. This allows the conversion unit A1 to be mounted at any position on the first side wall 11 using screws, nails, or the like. This has the advantage of improving the degree of freedom in the position (i.e., layout) at which the conversion unit A1 is disposed.

[0068] In the storage battery housing box 10 of this embodiment, each of the multiple housing sections 2 has a first through hole 22 that penetrates along the vertical direction (in this embodiment, the up-down direction). As a result, if water (for example, rainwater) enters each of the multiple housing sections 2, the water is discharged from each of the multiple housing sections 2 through the first through hole 22. In other words, the first through hole 22 functions as a drainage hole for water that has entered each of the multiple housing sections 2. This has the advantage of being able to prevent water from accumulating in each of the multiple housing sections 2.

[0069] In the storage battery housing box 10 of this embodiment, the housing 1 has a second through hole 151 that is a through hole different from the first through hole 22 and penetrates along the vertical direction. As a result, when water enters each of the multiple housing sections 2 and is discharged from each of the multiple housing sections 2 into the inside of the housing 1 through the first through hole 22, the water is discharged from the inside of the housing 1 through the second through hole 151. In other words, the second through hole 151 functions as a drainage hole for water that has entered the inside of the housing 1. This has the advantage of being able to prevent water from accumulating inside the housing 1.

[0070] In the storage battery housing box 10 of this embodiment, the second through hole 151 overlaps at least a portion of the first through hole 22 in the vertical direction. This has the effect that, when water enters each of the multiple housing sections 2 and is discharged from each of the multiple housing sections 2 into the inside of the housing 1 through the first through hole 22, the water is more easily discharged from the inside of the housing 1 through the second through hole 151. This has the advantage of further preventing water from accumulating inside the housing 1.

[0071] The storage battery transporting device 100 of this embodiment includes a storage battery housing box 10 and a carrier 20. The carrier 20 has a mounting base 201, a handle 202, and a pair of wheels 203. The storage battery housing box 10 is mounted on the mounting base 201. The handle 202 is connected to the mounting base 201. The pair of wheels 203 are provided at an end (lower end) 221 of the handle 202. When the storage battery housing box 10 is mounted on the mounting base 201, the attachment unit 3 of the storage battery transporting device 100 is located on the wheel 203 side when viewed from the normal direction (i.e., the up-down direction) of the surface of the mounting base 201 on which the storage battery housing box 10 is mounted. As a result, when a user moves the storage battery transporting device 100 to a desired position, the tip of the handle 202 tilts backward with respect to the pair of wheels 203, so that the first side wall 11 to which the conversion unit A1 is attached faces downward. As a result, there is an advantage that water (for example, rainwater) can be prevented from getting on the conversion unit A1 when the user moves the storage battery transport device 100 to an arbitrary position.

[0072] (4) Variations Modifications of the above-described embodiment are listed below. The following modifications may be implemented in appropriate combination.

[0073] In the above-described embodiment, the conversion unit A1 converts the power output from the multiple storage batteries B1 into desired discharge power and outputs it. That is, in the above-described embodiment, the conversion unit A1 is a conversion unit dedicated to discharge (a conversion unit used only for discharge). However, the conversion unit A1 may also convert input power into charging power for the multiple storage batteries B1 and output it to each of the multiple storage batteries B1. That is, the conversion unit A1 may also be a conversion unit dedicated to charging (a conversion unit used only for charging).

[0074] Furthermore, the conversion unit A1 may be capable of both converting the power output from the multiple storage batteries B1 into desired discharge power and outputting the power, and converting input power into charging power for the multiple storage batteries B1 and outputting the power to each of the multiple storage batteries B1. That is, the conversion unit A1 may be used for both discharging and charging. In short, it is sufficient for the conversion unit A1 to be able to perform at least one of converting the power output from the multiple storage batteries B1 into desired discharge power and outputting the power, and converting input power into charging power for the multiple storage batteries B1 and outputting the power to each of the multiple storage batteries B1.

[0075] In the above-described embodiment, the second side wall (right wall) 12, the third side wall (left wall) 13, the fourth side wall (upper wall) 14, and the sixth side wall (front wall) 16 are each formed of a resin material or a metal material. However, the second side wall 12, the third side wall 13, the fourth side wall 14, and the sixth side wall 16 may each be formed of wood. For example, the first side wall (rear wall) 11, the second side wall 12, the third side wall 13, and the fifth side wall 15 may each be formed of wood, and the fourth side wall 14 and the sixth side wall 16 may each be formed of a resin material or a metal material. Furthermore, the first side wall 11, the second side wall 12, the third side wall 13, the fourth side wall 14, the fifth side wall 15, and the sixth side wall 16 may each be formed of wood.

[0076] In the above embodiment, the fifth side wall (lower wall) 15 is made of wood, but it may be made of a resin material or a metal material. For example, the second side wall 12, the third side wall 13, the fourth side wall 14, the fifth side wall 15, and the sixth side wall 16 may each be made of a resin material or a metal material, and only the first side wall 11 may be made of wood. In other words, it is only necessary that a portion of the outer surface of the housing 1 that functions as the mounting portion 3 is made of wood.

[0077] In the above-described embodiment, the first side wall 11 serving as the mounting portion 3 is made of wood. However, the first side wall 11 serving as the mounting portion 3 may be made of a punched metal or the like, which is a plate member made of a metal material and has a plurality of holes formed therein.

[0078] In the above-described embodiment, the heat sink 6 also thermally connects the substrate 43 to the fourth side wall 14. However, it is sufficient if the heat sink 6 also thermally connects the substrate 43 to at least one of the second side wall 12, the third side wall 13, the fourth side wall 14, and the fifth side wall 15. With this configuration, the heat sink 6 efficiently conducts the heat generated by the electronic components 44 to the housing 1. This has the advantage of allowing the heat generated by the electronic components 44 to be efficiently dissipated.

[0079] In the above-described embodiment, the heat sink 6 thermally connects the substrate 43 to the upper end of the recess 111 in the first side wall 11 via the case 5. However, the heat sink 6 may thermally connect the substrate 43 to a portion of the recess 111 in the first side wall 11 other than the upper end via the case 5.

[0080] In the above-described embodiment, the carrier 20 of the storage battery transport device 100 has a pair of wheels 203 , but it is sufficient if it has at least one wheel 203 .

[0081] (summary) The battery housing box (10) of the first aspect includes a housing (1) and an attachment section (3). The housing (1) has a housing section (2) that houses a storage battery (B1). A conversion section (A1) is attached to the attachment section (3). The conversion section (A1) performs at least one of converting the power output by the storage battery (B1) into a desired discharge power and outputting it, and converting input power into charging power for the storage battery (B1) and outputting it to the storage battery (B1).

[0082] This embodiment has the advantage that any conversion unit (A1) can be attached.

[0083] In the battery housing box (10) of the second embodiment, the housing (1) of the first embodiment is box-shaped and has a side wall (11). The mounting portion (3) is the side wall (11). A recess (111) is formed in the side wall (11). The conversion portion (A1) is mounted in the recess (111).

[0084] This embodiment has the advantage that, when the battery housing box (10) is placed outdoors, the conversion unit (A1) can be prevented from being splashed with water.

[0085] In the battery housing box (10) of the third aspect, the housing (1) of the second aspect has a side wall (11) that is a first side wall (11) and a second side wall (12) and a third side wall (13) adjacent to the first side wall (11). The recess (111) is connected to each of the second side wall (12) and the third side wall (13).

[0086] This embodiment has the advantage that the conversion section (A1) can be easily cooled.

[0087] In a fourth aspect of the battery housing box (10), in any one of the first to third aspects, the housing (1) has a plurality of housing sections (2). The battery housing box (10) of the fourth aspect further includes a relay section (4). The relay section (4) has a parallel circuit (41) and a connection section (42). The parallel circuit (41) connects the batteries (B1) housed in each of the plurality of housing sections (2) in parallel. The connection section (42) electrically connects the parallel circuit (41) and the conversion section (A1).

[0088] This embodiment has the advantage that the user can use a plurality of storage batteries (B1) connected in parallel.

[0089] In a battery housing box (10) of a fifth aspect, the housing (1) of the fourth aspect is box-shaped and has a side wall (11). The mounting portion (3) is the side wall (11). The relay portion (4) is disposed inside the housing (1) and on the inside of the side wall (11).

[0090] This embodiment has the advantage that wiring for electrically connecting the storage battery (B1) and the conversion unit (A1) housed in each of the housing units (2) can be easily performed.

[0091] In a sixth aspect of the battery housing box (10), in the fifth aspect, at least a part of the relay part (4) is configured by an electronic component (44) mounted on a substrate (43). The sixth aspect of the battery housing box (10) further includes a heat sink (6) that thermally connects the substrate (43) to the recess (111).

[0092] This embodiment has the advantage that heat generated by the electronic components (44) can be dissipated.

[0093] In a seventh aspect of the battery housing box (10), in the sixth aspect, the housing (1) has a second side wall (12), a third side wall (13), and a fourth side wall (14), and a fifth side wall (15). The second side wall (12) and the third side wall (13) are adjacent to the first side wall (11) and face each other. The fourth side wall (14) and the fifth side wall (15) are adjacent to the first side wall (11) and face each other. The heat sink (6) further thermally connects the substrate (43) to at least one of the second side wall (12), the third side wall (13), the fourth side wall (14), and the fifth side wall (15).

[0094] This embodiment has the advantage that heat generated by the electronic components (44) can be efficiently dissipated.

[0095] In the battery housing box (10) of the eighth aspect, in the sixth or seventh aspect, the side wall (11) is made of a material having a lower thermal conductivity than the heat sink (6).

[0096] This embodiment has the advantage that the heat generated in the electronic component (44) and conducted to the housing (1) by the heat sink (6) is less likely to be transmitted to the conversion unit (A1).

[0097] In a ninth aspect of the battery housing box (10), in any one of the fourth to eighth aspects, at least a part of the relay section (4) is formed by an electronic component (44) mounted on a board (43). An accommodation direction (D1), which is a direction in which the storage battery (B1) is accommodated in each of the plurality of accommodation sections (2), intersects with the thickness direction of the board (43).

[0098] This embodiment has the advantage that, even if water gets into each of the plurality of storage sections (2), the water is less likely to splash onto the base plate (43).

[0099] In the battery housing box (10) of the tenth aspect, in any one of the first to ninth aspects, the mounting portion (3) is made of wood.

[0100] This embodiment has the advantage of improving the degree of freedom in the position where the conversion section (A1) is arranged.

[0101] In the battery housing box (10) of an eleventh aspect, in any one of the first to tenth aspects, the housing portion (2) has a through-hole (22) that penetrates along the vertical direction.

[0102] This embodiment has the advantage that it is possible to prevent water from accumulating in each of the plurality of storage sections (2).

[0103] In the 12th aspect of the battery housing box (10), in the 11th aspect, the housing (1) has a second through hole (151) that is a through hole different from the first through hole (22) and that penetrates along the vertical direction.

[0104] This embodiment has the advantage that it is possible to prevent water from accumulating inside the housing (1).

[0105] In a battery housing box (10) of a thirteenth aspect, in the twelfth aspect, the second through-hole (151) overlaps at least a part of the first through-hole (22) in the vertical direction.

[0106] This embodiment has the advantage that water can be further prevented from accumulating inside the housing (1).

[0107] A battery transport device (100) of a fourteenth aspect includes a battery housing box (10) according to any one of the first to fourteenth aspects and a carrier (20). The carrier (20) has a platform (201) on which the battery housing box (10) is placed, a handle (202) connected to the platform (201), and wheels (203) provided at the end of the handle (202). When the battery housing box (10) is placed on the platform (201), the attachment portion (3) is located on the wheel (203) side when viewed from the normal direction of the surface of the platform (201) on which the battery housing box (10) is placed.

[0108] This embodiment has the advantage that water can be prevented from getting on the conversion unit (A1) when the user moves the storage battery transport device (100) to a desired position. [Explanation of symbols]

[0109] 100 Battery transport device 10 Battery storage box 1 chassis 11 First side wall (side wall) 111 recess 12 Second side wall 13 Third side wall 14 Fourth Side Wall 15 5th side wall 151 Second through hole 2. Storage section 22 First through hole (through hole) 3 Mounting part 4 Relay section 41 parallel circuit 42 Connection 43 Circuit Board 44 Electronic Components 6 Heat sink 20 Carrie 201 Mounting table 202 Handle 203 Wheels A1 conversion unit B1 storage battery D1 Storage direction

Claims

1. a housing having a housing portion for housing a storage battery; The mounting section includes a mounting section to which a conversion unit is attached that performs at least one of the following: a conversion that converts the power output by the storage battery into a desired discharge power and outputs it, and a conversion that converts the input power into charging power for the storage battery and outputs it to the storage battery. Battery storage box.

2. the housing is box-shaped and has a side wall; the mounting portion is the side wall, The side wall has a recess formed therein, The conversion portion is attached to the recess. The battery housing box according to claim 1 .

3. the housing has a second side wall and a third side wall adjacent to the first side wall, The recess is connected to each of the second side wall and the third side wall. The battery housing box according to claim 2.

4. the housing has a plurality of the storage sections, The relay unit further comprises a parallel circuit for connecting the batteries housed in each of the plurality of housing units in parallel, and a connecting unit for electrically connecting the parallel circuit and the conversion unit. The battery housing box according to claim 1 .

5. the housing is box-shaped and has a side wall; the mounting portion is the side wall, The relay portion is disposed inside the housing and on the inner side of the side wall. The battery housing box according to claim 4.

6. At least a portion of the relay section is formed by an electronic component mounted on a substrate, a heat sink thermally connecting the substrate to the sidewall; The battery housing box according to claim 5.

7. The housing includes: a second side wall and a third side wall adjacent to the first side wall and facing each other; a fourth side wall and a fifth side wall adjacent to the first side wall and facing each other; The heat sink further thermally connects the substrate to at least one of the second side wall, the third side wall, the fourth side wall, and the fifth side wall. The battery housing box according to claim 6.

8. The side wall is formed of a material having a lower thermal conductivity than the heat sink. The battery housing box according to claim 6.

9. At least a portion of the relay section is formed by an electronic component mounted on a substrate, an accommodation direction in which the storage batteries are accommodated in each of the accommodation portions intersects with a thickness direction of the substrate; The battery housing box according to claim 4.

10. The mounting portion is made of wood. The battery housing box according to claim 1 .

11. The aforementioned housing portion has a through hole that penetrates vertically, The battery housing box according to claim 1 .

12. The housing has a second through-hole, which is different from the first through-hole and penetrates along the vertical direction. The battery housing box according to claim 11.

13. The second through-hole overlaps with at least a portion of the first through-hole in the vertical direction. The battery housing box according to claim 12.

14. A battery housing box according to any one of claims 1 to 13, The battery housing box is mounted on a platform on which it is placed, a handle connected to the platform, and a carrier having wheels provided at the end of the handle. The aforementioned mounting portion is located on the wheel side when the battery housing box is placed on the aforementioned base, as viewed from the direction normal to the surface on which the battery housing box is placed on the aforementioned base. Battery transport device.

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