JP6871056B2 - Portable power supply device - Google Patents

Description

The present invention relates to a portable power supply device that converts DC power supplied from a DC power source such as a battery into AC power equivalent to commercial AC power and outputs the power.

Batteries and fuel cells mounted on electric vehicles (including PHEVs) Fuel cells mounted on fuel cells can be DC power sources for driving general power consuming devices. As a power supply device that converts the DC power output by these DC power sources into AC power required by a general power consuming device and outputs the power supply device, for example, the one described in Patent Document 1 is known.

The power feeding device described in Patent Document 1 includes a substantially cubic housing containing an inverter and the like, a rear housing portion provided at the rear portion of the housing, and a front housing portion provided at the front portion of the housing. I have. The rear housing section houses a plug connected to a DC power source such as a battery, and the front housing section houses an outlet that outputs AC power.

Further, the power feeding device includes a towing handle provided at the front portion of the housing and wheels provided at the rear lower portion of the housing. By using these, the user can carry the power supply device to the required place.

Japanese Unexamined Patent Publication No. 2016-154404

By the way, this type of power supply device is often used only in an emergency when commercial AC power cannot be used (for example, in the event of a power failure due to a disaster), so it does not get in the way in a storage place such as a disaster prevention warehouse. It is preferable that it can be stored as such. However, the conventional power supply device described in Patent Document 1 has a problem that it is difficult to store it depending on the shape of the storage space because the posture at the time of storage is limited.

Further, it is preferable that such a type of power feeding device is easy to carry to the required place. However, in the above-mentioned conventional power feeding device, since a heavy object such as an inverter is accommodated in the entire cube-shaped housing, the position of the center of gravity during transportation is relatively high, and therefore, transportation on a road surface having irregularities is particularly high. There was a problem that it was difficult.

The present invention has been made in view of these circumstances, and an object of the present invention is to provide a portable power feeding device having excellent storability and portability.

In order to solve the above problems, the portable power supply device according to the present invention includes a box body, a lid that closes the opening of the box body, a traction handle provided on the box body so that it can be pulled out, and traction of the box body. A trunk box having casters provided on the opposite side of the handle, a partition wall that divides the space inside the trunk box into a first storage space near the casters and a second storage space near the tow handle, and a first storage space. It is provided with a power conversion unit arranged in the space, and the first accommodation space communicates with the outside of the box body by an intake port and an exhaust port provided in a portion surrounding the first accommodation space of the box body, while the second accommodation space is provided. The accommodation space has a configuration that does not communicate with either the outside of the box body or the first accommodation space.

In this configuration, the power conversion unit is housed in a trunk box having a box body and a lid that closes the opening of the box body. That is, the portable power supply device has the appearance of a trunk box. Therefore, according to this configuration, an arbitrarily selected side surface can be placed on the floor surface (ground), so that the posture at the time of storage is not limited, and the portable power supply device is stored in a posture according to the storage space. can do.

Further, in this configuration, a power conversion unit, which is a heavy object, is arranged in the first accommodation space provided near the casters. Therefore, according to this configuration, the position of the center of gravity during transportation using the tow handle and casters is relatively low, and transportation becomes easy.

The portable power supply device further includes a circuit group including a filter circuit configured to filter power supplied from the outside and send it to a power conversion unit, and a control circuit configured to control the power conversion unit. , The circuit group may have the configuration that it is arranged in the second accommodation space.

The circuit group including the filter circuit and the control circuit is lighter than the power conversion unit. Therefore, even if such a circuit group is arranged in the second accommodation space, the position of the center of gravity during transportation does not become so high that the ease of transportation is impaired.

The portable power supply device is provided so that the box body has a front surface, a back surface, a right side surface, a left side surface, and a bottom surface, and a towing handle is pulled out from a portion where the right side surface and the bottom surface of the box body intersect. The casters may be provided at the intersection of the left side surface and the bottom surface of the box body.

In this case, it provided with (1) air inlet is provided on the positive face of the box body, an exhaust port arrangement and which is provided on the back of the box body (2) on the left side surface and the bottom surface of the inlet is the box body together, it is possible to adopt a configuration in which an exhaust port is provided on the positive side and the back of the box body.

According to the present invention, it is possible to provide a portable power feeding device having excellent storability and portability.

It is the schematic which shows the usage mode of the portable power supply device which concerns on 1st Example. It is a perspective view of the portable power supply device which concerns on 1st Example. It is (A) front view, (B) rear view, (C) right side view, and (D) left side view of the portable power supply device which concerns on 1st Example. It is (A) top view, (B) front view, and (C) bottom view of the portable power supply device which concerns on 1st Example. It is (A) the perspective view which shows the state which opened the lid, and (B) is the perspective view which shows the state of use of the portable power supply device which concerns on 1st Example. It is a front view which shows the state at the time of transportation of the portable power supply device which concerns on 1st Example. A perspective view of the portable power supply device according to the first embodiment (A) in a state where the first accommodation space and the second accommodation space are emptied, and (B) a power conversion unit or the like is arranged in the first accommodation space. It is a perspective view of the state which the circuit group is arranged in the 2nd accommodation space. It is a block diagram which shows the circuit structure of the portable power supply device which concerns on 1st Example. It is a top view sectional view which shows the air supply / exhaust path of the portable power supply device which concerns on 1st Example. It is the schematic which shows the usage mode of the portable power supply device which concerns on 2nd Example. It is a perspective view of the portable power supply device which concerns on 2nd Example. It is (A) front view, (B) rear view, (C) right side view, and (D) left side view of the portable power supply device which concerns on 2nd Example. It is (A) top view, (B) front view, and (C) bottom view of the portable power supply device which concerns on 2nd Example. A perspective view of the portable power supply device according to the second embodiment (A) in a state where the first accommodation space and the second accommodation space are emptied, and (B) a power conversion unit and the like are arranged in the first accommodation space. It is a perspective view of the state which the circuit group is arranged in the 2nd accommodation space. It is a block diagram which shows the circuit structure of the portable power supply device which concerns on 2nd Example. It is (A) plan view sectional view and (B) side view sectional view which shows the air supply / exhaust path of the portable power feeding device which concerns on 2nd Example.

Hereinafter, the first embodiment and the second embodiment of the portable power feeding device according to the present invention will be described with reference to the accompanying drawings.

[First Example]
FIG. 1 shows a usage mode of the portable power feeding device 10 according to the first embodiment of the present invention. As shown in the figure, the portable power supply device 10 includes a plug 11 connected to an electric vehicle EV equipped with a battery B serving as a DC power source, a cable 11a attached thereto, and various power consumption devices (in this embodiment). It is provided with three outlets 12a, 12b, 12c connected to the power consuming devices La, Lb, Lc1, Lc2). The outlets 12a, 12b, and 12c can output AC power up to 1.5 kW, which corresponds to commercial AC power, respectively. That is, the rated output power of the portable power supply device 10 is 4.5 kW.

As shown in FIGS. 2 to 4, the portable power supply device 10 includes a box main body 14, a lid 13 for closing the opening of the box main body 14, and a towing handle 22 provided on the box main body 14 so as to be retractable. It has the appearance of a trunk box having casters 23 provided on the opposite side of the box body 14 from the towing handle 22.

The box body 14 has a front surface shown in FIG. 3A, a back surface shown in FIG. 3B, a right side surface shown in FIG. 3C, and a left side surface shown in FIG. , And the bottom surface shown in FIG. 4 (C). The box body 14 is preferably made of a resin material having excellent impact resistance, weather resistance and heat resistance.

The lid 13 is rotatably connected to the back surface of the box body 14 via a hinge 15. Like the box body 14, the lid 13 is preferably made of a resin material having excellent impact resistance, weather resistance, and heat resistance.

The towing handle 22 is provided so as to be pulled out from a portion where the right side surface and the bottom surface of the box body 14 intersect. Further, the caster 23 is provided at a portion where the left side surface and the bottom surface of the box body 14 intersect. In the portable power supply device 10, the casters 23 are grounded, the towing handle 22 is pulled out, and the portable power supply device 10 is transported in a slightly forward inclined posture, similar to a general trunk box (suitcase) used for travel and the like. (See FIG. 6).

An outlet cover 16 for protecting the outlets 12a, 12b, and 12c is provided on the front surface of the box body 14. When the outlet cover 16 is opened, the outlets 12a, 12b, and 12c appear (see FIG. 5 (A)). The outlet cover 16 can be closed after the connection between the power consuming device (for example, the power consuming device La) and the outlet (for example, the outlet 12a) is completed (see FIG. 5B).

A louver-shaped intake port 17 is further provided on the front surface of the box body 14. The intake port 17 may be composed of two stacked louvers having different angles in order to prevent raindrops from entering the inside of the box body 14, or may be composed of only one louver from the viewpoint of intake efficiency. You may.

A louver-shaped exhaust port 18 is provided on the back surface of the box body 14. Like the intake port 17, the exhaust port 18 may be composed of two stacked louvers having different angles in order to prevent raindrops from entering the inside of the box body 14, or one from the viewpoint of exhaust efficiency. It may be composed only of the louvers of.

In addition, the box body 14 is provided with a front side handle 19, a right side handle 20, and a left side handle 21.

FIG. 5A shows a portable power supply device 10 with the lid 13 open. As shown in the figure, the plug 11 and the cable 11a are housed in a wound state. The cable 11a can be pulled out from the left side surface of the box body 14. Further, the lid body 13 can be closed after the cable 11a is pulled out (see FIG. 5B).

As shown in FIG. 7A, the portable power supply device 10 divides the space inside the box body 14 into a first storage space 30 near the caster 23 and a second storage space 31 near the towing handle 22. And a cable connector 33 provided on the partition wall 32.

As shown in FIG. 3B, three power conversion units 35, 36, and 37 are arranged in the first accommodation space 30. More specifically, the power conversion units 35, 36, and 37 are arranged so as to be overlapped so that the fan, which will be described later, faces the intake port 17 and is in contact with the inner wall of the left side surface of the box body 14. In addition, an exhaust duct 38 is arranged in the first accommodation space 30. The exhaust duct 38 is connected between the power conversion units 35, 36, 37 and the exhaust port 18.

As shown in FIG. 3B, a circuit group 39, which will be described later, is arranged in the second accommodation space 31.

FIG. 8 shows the circuit configuration of the portable power feeding device 10. As shown in the figure, one end of the cable 11a is connected to the plug 11 and the other end is connected to the cable connector 33. That is, the DC power from the battery B is supplied to the circuit group 39 arranged in the second accommodation space 31 via the cable connector 33.

The circuit group 39 includes a filter circuit, a control circuit, and a terminal board. The filter circuit is configured to filter the DC power supplied through the cable connector 33 and output it to the power conversion units 35, 36, 37. The terminal board provided after the filter circuit is configured to distribute the power filtered by the filter circuit to the three power conversion units 35, 36, and 37. Further, the control circuit is configured to control the operation of the filter circuit and the power conversion units 35, 36, 37 and to monitor the state of the power conversion units 35, 36, 37.

The filter circuit, the control circuit, and the terminal board may be composed of one printed circuit board or a plurality of printed circuit boards. Further, the circuit group 39 may further include a fuse for preventing damage due to overcurrent and various sensors.

The circuit group 39 and the input terminals of the power conversion units 35, 36, and 37 are connected by a cable penetrating through a through hole 34 with a cable bush formed in the partition wall 32. In addition, in FIG. 7, the illustration of this cable is omitted.

The power conversion unit 35 has an inverter circuit that converts DC power filtered by a filter circuit into AC power corresponding to commercial AC power, and two fans for air-cooling the components constituting the inverter circuit. .. The two fans are arranged side by side on one side of the power conversion unit 35. The output terminal of the power conversion unit 35 and the outlet 12a are connected by a cable penetrating one of the through holes 34 with a cable bush formed in the partition wall 32. Note that in FIG. 7, the illustration of this cable is also omitted.

The same applies to the other power conversion units 36 and 37. However, the output terminal of the power conversion unit 36 is connected to the outlet 12b, and the output terminal of the power conversion unit 37 is connected to the outlet 12c.

FIG. 9 shows the air supply / exhaust path of the portable power supply device 10. As shown in the figure, the first accommodation space 30 communicates with the outside by an intake port 17 and an exhaust port 18 provided in a portion surrounding the first accommodation space 30 of the box main body 14. Therefore, when the fans of the power conversion units 35, 36, and 37 are operated, fresh outside air is taken into the first accommodation space 30 from the intake port 17. Then, this fresh air passes through the inside of the power conversion units 35, 36, 37 and the exhaust duct 38, and is finally exhausted from the exhaust port 18.

On the other hand, the intake port and the exhaust port are not provided in the portion of the box body 14 surrounding the second accommodation space 31. Further, a cable bush is attached to the through hole 34 provided in the partition wall 32 that divides the space in the box main body 14 into the first accommodation space 30 and the second accommodation space 31. That is, the second accommodation space 31 does not communicate with either the outside or the first accommodation space 30. In other words, the second accommodation space 31 is sealed. As a result, the circuit group 39 housed in the second storage space 31 is protected from raindrops and dust.

The latter is overwhelmingly heavier in terms of the weight of the circuit group 39 including the filter circuit, the control circuit, and the terminal board and the total weight of the power conversion units 35, 36, and 37. Therefore, when transported in the posture shown in FIG. 6, the center of gravity of the portable power feeding device 10 is at a low position near the caster 23.

[Second Example]
FIG. 10 shows a usage mode of the portable power feeding device 50 according to the second embodiment of the present invention. As shown in the figure, the portable power supply device 50 includes a plug 51 connected to an electric vehicle EV equipped with a battery B serving as a DC power source, a cable 51a attached thereto, and various power consuming devices (in this embodiment). It is provided with six outlets 52a, 52b, 52c, 52d, 52e, 52f connected to the power consuming devices La, Lb, Lc, Ld, Le, Lf1, Lf2). The outlets 52a, 52b, 52c, 52d, 52e, and 52f can each output AC power up to 1.5 kW, which corresponds to commercial AC power. That is, the rated output power of the portable power supply device 50 is 9.0 kW.

As shown in FIGS. 11 to 13, the portable power supply device 50 includes a box main body 54, a lid 53 for closing the opening of the box main body 54, and a towing handle 64 provided in the box main body 54 so as to be retractable. It has the appearance of a trunk box having casters 65 provided on the opposite side of the box body 54 from the towing handle 64.

The box body 54 has a front surface shown in FIG. 12A, a back surface shown in FIG. 12B, a right side surface shown in FIG. 12C, and a left side surface shown in FIG. , And the bottom surface shown in FIG. 13 (C). The box body 54 is preferably made of a resin material having excellent impact resistance, weather resistance and heat resistance.

The lid 53 is rotatably connected to the back surface of the box body 54 via a hinge 55. Like the box body 54, the lid 53 is preferably made of a resin material having excellent impact resistance, weather resistance, and heat resistance.

The towing handle 64 is provided so as to be pulled out from a portion where the right side surface and the bottom surface of the box body 54 intersect. Further, the caster 65 is provided at a portion where the left side surface and the bottom surface of the box body 54 intersect. In the portable power supply device 50, the casters 65 are grounded, the towing handle 64 is pulled out, and the portable power supply device 50 is transported in a slightly forward inclined posture, similar to a general trunk box (suitcase) used for travel and the like. See FIG. 6 for the first embodiment).

An outlet cover 56 for protecting the outlets 52a, 52b, 52c, 52d, 52e, and 52f is provided on the front surface of the box body 54. When the outlet cover 56 is opened, the outlets 52a, 52b, 52c, 52d, 52e, and 52f appear. Similar to the first embodiment, the outlet cover 56 can be closed after the connection between the power consuming device (for example, the power consuming device La) and the outlet (for example, the outlet 52a) is completed.

A front exhaust port 57 and a rear exhaust port 58 are provided on the front surface and the back surface of the box body 54. These may have a louver shape as in the first embodiment.

On the left side surface and the bottom surface of the box body 54, a left side surface side intake port 59 and a bottom surface side intake port 60 are provided. These may have a louver shape as in the first embodiment.

In addition, the box body 54 is provided with a front side handle 61, a right side handle 62, and a left side handle 63.

Similar to the first embodiment, when the lid 53 is opened, the plug 51 and the cable 51a housed in the wound state appear. The cable 51a can be pulled out from the left side surface of the box body 54. Further, the lid 53 can be closed after the cable 51a is pulled out.

As shown in FIG. 14A, the portable power supply device 50 divides the space inside the box body 54 into a first storage space 70 closer to the caster 65 and a second storage space 71 closer to the towing handle 64. And a cable connector 73 provided in the vicinity of the partition wall 72.

As shown in FIG. 6B, six power conversion units 75, 76, 77, 78, 79, 80 are arranged in the first accommodation space 70. More specifically, the power conversion units 75, 76, 77 are stacked so that the fan, which will be described later, faces the rear exhaust port 58 and is in contact with the inner walls of the front and left sides of the box body 54. .. Further, the power conversion units 78, 79, 80 are arranged so as to be overlapped so that the fan faces the front exhaust port 57 and is in contact with the inner walls of the back surface and the left side surface of the box body 54.

As shown in FIG. 6B, a circuit group 81, which will be described later, is arranged in the second accommodation space 71.

FIG. 15 shows the circuit configuration of the portable power feeding device 50. As shown in the figure, one end of the cable 51a is connected to the plug 51 and the other end is connected to the cable connector 73. That is, the DC power supplied from the battery B is brought to the circuit group 81 arranged in the second accommodation space 71 via the cable connector 73.

The circuit group 81 includes a filter circuit, a control circuit, and a terminal board. The filter circuit is configured to filter the DC power supplied via the cable connector 73 and output it toward the power conversion units 75, 76, 77, 78, 79, 80. The terminal board provided after the filter circuit is configured to distribute the power filtered by the filter circuit to the six power conversion units 75, 76, 77, 78, 79, 80. Further, the control circuit controls the operation of the filter circuit and the power conversion unit 75,76,77,78,79,80 and monitors the state of the power conversion unit 75,76,77,78,79,80. It is configured.

The filter circuit, the control circuit, and the terminal board may be composed of one printed circuit board or a plurality of printed circuit boards. Further, the circuit group 81 may further include a fuse for preventing damage due to overcurrent and various sensors.

The circuit group 81 and the input terminals of the power conversion units 75, 76, 77, 78, 79, 80 are connected by a cable penetrating through a through hole 74 with a cable bush formed in the partition wall 72. Note that in FIG. 14, the cable is not shown.

The power conversion unit 75 has an inverter circuit that converts DC power filtered by a filter circuit into AC power corresponding to commercial AC power, and two fans for air-cooling the components constituting the inverter circuit. .. The two fans are arranged side by side on one side of the power conversion unit 75. The output terminal of the power conversion unit 75 and the outlet 52a are connected by a cable penetrating one of the through holes 74 with a cable bush formed in the partition wall 72. Note that in FIG. 14, the illustration of this cable is also omitted.

The same applies to the other power conversion units 76, 77, 78, 79, 80. However, the output terminal of the power conversion unit 76 is connected to the outlet 52b, the output terminal of the power conversion unit 77 is connected to the outlet 52c, the output terminal of the power conversion unit 78 is connected to the outlet 52d, and the output of the power conversion unit 79. The terminal is connected to the outlet 52e, and the output terminal of the power conversion unit 80 is connected to the outlet 52f.

FIG. 16 shows the air supply / exhaust path of the portable power supply device 50. As shown in the figure, the first accommodation space 70 includes a left side intake port 59, a bottom side intake port 60, a front side exhaust port 57, and a back surface provided in a portion surrounding the first accommodation space 70 of the box body 54. It communicates with the outside by the side exhaust port 58. Therefore, when the fans of the power conversion units 75, 76, and 77 are operated, fresh outside air is taken into the first accommodation space 70 from the left side intake port 59 and the bottom side intake port 60. Then, this fresh air passes through the inside of the power conversion units 75, 76, 77 and is finally exhausted from the front side exhaust port 57. Even if the fans of the power conversion units 78, 79, 80 are operated, fresh outside air is taken into the first accommodation space 70 from the left side intake port 59 and the bottom side intake port 60. Then, this fresh air passes through the inside of the power conversion units 78, 79, 80 and is finally exhausted from the rear exhaust port 58.

On the other hand, the intake port and the exhaust port are not provided in the portion of the box body 54 surrounding the second accommodation space 71. A cable bush is attached to the through hole 74 provided in the partition wall 72 that divides the space inside the box body 54 into the first accommodation space 70 and the second accommodation space 71. That is, the second accommodation space 71 does not communicate with either the outside or the first accommodation space 70. In other words, the second accommodation space 71 is sealed. As a result, the circuit group 81 housed in the second storage space 71 is protected from raindrops and dust.

The latter is overwhelmingly heavier in terms of the weight of the circuit group 81 including the filter circuit, the control circuit and the terminal board, and the total weight of the power conversion units 75, 76, 77, 78, 79, 80. Therefore, as in the first embodiment, the center of gravity of the portable power feeding device 50 during transportation is at a low position near the casters 65.

[Modification example]
Although the first embodiment and the second embodiment of the portable power feeding device according to the present invention have been described above, the configuration of the present invention is not limited thereto.

For example, the shapes of the first accommodation space and the second accommodation space can be changed as appropriate. However, in the present invention, the first accommodation space must be arranged closer to the casters.

The positions, shapes, and numbers of the intake port and the exhaust port that communicate the first accommodation space to the outside can also be changed as appropriate. Further, the arrangement of the power conversion unit in the first accommodation space can be appropriately changed in response to the change of the intake port and the exhaust port.

In addition, the detailed configuration of the portable power feeding device according to the present invention can be appropriately changed as long as it does not deviate from the scope of claims.

10 Portable power supply device (first embodiment)
11 Plug 11a Cable 12a to 12c Outlet 13 Lid 14 Box body 15 Hinge 16 Outlet cover 17 Intake port 18 Exhaust port 19 Front side handle 20 Right side handle 21 Left side handle 22 Towing handle 23 Caster 30 First accommodation space 31 Second accommodation space 32 Partition 33 Cable connector 34 Through hole 35-37 Power conversion unit 38 Exhaust duct 39 Circuit group 50 Portable power supply device (second embodiment)
51 Plug 51a Cable 52a to 52f Outlet 53 Lid 54 Box body 55 Hinge 56 Outlet cover 57 Front side exhaust port 58 Rear side exhaust port 59 Left side intake port 60 Bottom side intake port 61 Front side handle 62 Right side handle 63 Left side handle 64 Tow handle 65 Caster 70 1st accommodation space 71 2nd accommodation space 72 Partition 73 Cable connector 74 Through hole 75-80 Power conversion unit 81 Circuit group B Battery EV Electric vehicle La-Le, Lc1, Lc2 Lf1, Lf2 Power consuming equipment

Claims (5)

It has a box body, a lid that closes the opening of the box body, a tow handle provided on the box body so that it can be pulled out, and a caster provided on the side of the box body opposite to the tow handle. With a trunk box
A partition wall that divides the space inside the trunk box into a first storage space near the casters and a second storage space near the towing handle.
A power conversion unit arranged in the first accommodation space is provided.
The first storage space communicates with the outside of the box body by an intake port and an exhaust port provided in a portion of the box body surrounding the first storage space.
A portable power supply device characterized in that the second accommodating space does not communicate with either the outside of the box body or the first accommodating space. A group of circuits including a filter circuit configured to filter the power supplied from the outside and send it to the power conversion unit and a control circuit configured to control the power conversion unit is further provided.
The portable power supply device according to claim 1, wherein the circuit group is arranged in the second accommodation space. The box body has a front surface, a back surface, a right side surface, a left side surface, and a bottom surface.
The towing handle is provided so as to be pulled out from a portion where the right side surface and the bottom surface of the box body intersect.
The portable power feeding device according to claim 1 or 2, wherein the casters are provided at a portion where the left side surface and the bottom surface of the box body intersect. The intake port is provided on the positive side of the box body,
The portable power supply device according to claim 3, wherein the exhaust port is provided on the back surface of the box body. The intake port is provided on the left side surface and the bottom surface of the box body.
The exhaust port is portable power supply device according to claim 3, characterized in that provided on the positive surface and the back surface of the box body.

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