JP7249592B2 - power supply - Google Patents

Description

The present invention relates to a power supply device for charging storage batteries.

Electric vehicles such as electric vehicles (EV) and plug-in hybrid vehicles (PHV) have storage batteries as power supply sources. In order to charge this storage battery, it is charged using a charging stand installed outside (home or commercial facility).

Such a charging stand includes a box that houses a relay that opens and closes a power supply line that supplies power from a cable to a storage battery, and a control circuit that controls the relay.

By the way, chargers are often installed outdoors, and if water enters the inside of the box during rainy weather, there is a risk that parts such as circuits will short-circuit, so the box has a waterproof structure.

In addition to the boxes provided in chargers, conventional boxes with a waterproof structure store an electronic board within the inner frame of a double-frame case, and an inner lid made of elastic material is attached to the outer circumference of the inner frame. clinging to
The inner lid covers the inner frame from the one open end surface, and the outer lid covers the outer frame and the inner lid from the one open end surface (see Patent Document 1, for example).

JP 2014-53405 A

However, in Patent Document 1, since the distance between the first mating surface between the outer lid and the double case and the second mating surface between the inner lid and the double case is short, rainwater that has entered from the first mating surface is prevented. There was a problem that it was easy to intrude into the second mating surface. In particular, when there is a storm caused by a typhoon or the like, rainwater may be allowed to enter the interior beyond the performance of the waterproof structure.

SUMMARY OF THE INVENTION An object of the present invention is to improve the reliability of the waterproof function by suppressing the infiltration of rainwater and the like into the substrate accommodated in the inner box.

A power supply device according to the present invention is a power supply device for outputting power to a power line for charging a storage battery used as a power source of a mobile body, comprising : an inner box for housing a board on which electronic components are mounted; an outer box containing a box, the inner box having a first body portion having a first opening, the outer box having a second body portion having a second opening, and the second body portion having a second opening; and a lid portion that closes the opening and has a shallower bottom than the second main body portion, and the second main body is arranged such that the bottom side of the first main body portion of the inner box is positioned on the second opening side. The inner box is arranged in the portion , and the substrate is attached to the bottom portion of the first body portion .

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to improve the reliability of the waterproof function by suppressing the infiltration of rainwater and the like into the substrate accommodated in the inner box.

1 is an overall perspective view of a power supply device according to an embodiment; FIG. 3 is an exploded perspective view of the main body of the power supply device according to the embodiment; FIG. It is a front view at the time of opening the 2nd cover part of the outer case of the power supply apparatus which concerns on embodiment. FIG. 2 is a cross-sectional view taken along line AA of the power supply device according to the embodiment; 1 is a circuit diagram of a power supply device according to an embodiment; FIG.

A power supply apparatus 100 of this embodiment outputs power for charging a storage battery 107 used as a power source of a mobile body 106 to wiring via a relay 170.
00, an inner box 110 housing a substrate 150 on which a relay 170 is mounted, and an inner box 11
0, the inner box 110 includes a first body portion 111 having a first opening 113 and a first lid closing the first opening 113 and having a shallower bottom than the first body portion 111. The outer box 130 includes a second main body portion 131 having a second opening 133 and a second opening 133
It has a second lid portion 132 whose bottom is shallower than the second main body portion 131, and the inner casing 110 is placed inside the second main body portion 131 so that the first main body portion 111 side of the inner box 110 is positioned on the second opening portion 133 side. A box 110 is placed.

Hereinafter, embodiments of a power supply device according to the present disclosure will be described based on the drawings. It should be noted that the embodiments disclosed below are all examples, and are not intended to limit the power supply device according to the present disclosure.

Moreover, in the embodiments disclosed below, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the description, thereby facilitating the understanding of those skilled in the art.

(First embodiment)
As shown in FIG. 1, a power supply device 100 according to the first embodiment is attached to a predetermined construction surface 102 of a pole 109 for attaching this power supply device 100 . pole 1
09 is attached substantially vertically to the ground. The power supply device 100 includes a body portion 101 , a plug portion 103 , a power line 104 connecting the body portion 101 and the plug portion 103 , and a holding portion 1 .
05. In this embodiment, the rear surface of the power supply device 100 is attached to the dedicated pole 109, but it can also be attached to a construction surface such as a building wall or a pillar, for example.

Main unit 101 outputs electric power for charging storage battery 107 that is used as a power source for mobile object 106 . The input side of the main unit 101 is connected to the power system 108 via the wiring 200 . AC power supplied from the power system 108 is used as the power to be output from the main unit 101 to the storage battery of the moving body 106 .

The plug part 103 can be connected to a charging port of the storage battery 107 . Main unit 101 outputs electric power for charging while plug unit 103 is connected to the charging port of storage battery 107 , thereby charging storage battery 107 with the electric power through plug unit 103 . The holding portion 105 holds the plug portion 103 when not in use.

The moving body 106 has a storage battery 107 and moves using the electric energy charged in the storage battery 107 . The moving object 106 is, for example, an electric vehicle (EV), a plug-in hybrid vehicle (PHEV) that runs by combining the output of an engine and the output of an electric motor, a fuel cell vehicle (
FCV), electric carts, electric motorcycles, electric tricycles, and four-wheeled buggies. Electric two-wheeled vehicles include motorcycles, electric motorcycles, and electrically assisted two-wheeled vehicles. Electric tricycles include electric motorcycles and electrically assisted tricycles. Furthermore, the mobile object 106 can be a drone,
Air vehicles such as aircraft are also included, and are not particularly limited.
(Body)
As shown in FIG. 2, the main body 101 is composed of an inner box 110 (housing) and an outer box 130 in a double box, and is made of resin, for example. In particular, since the inner box 110 accommodates heat-generating components such as a relay 170 to be described later, it is preferably made of a highly heat-resistant resin such as polyethylene, polypropylene, polycarbonate, polyphenylene sulfide, polyvinylidene chloride, etc., but is not particularly limited. do not have. The inner box 110 includes a first body portion 111 and a first lid portion 112 . The outer box 130 includes a second body portion 131 and a second lid portion 132 and accommodates the inner box 110 .

The first body portion 111 is formed in a box-like shape having a first opening portion 113 with one end face open, and has a substantially rectangular first bottom plate 114 and an opening from the periphery of the first bottom plate 114 to the first bottom plate 114 . Four substantially vertically extending side plates, that is, a first left side plate 115, a first right side plate 116, and a first upper side plate 117
, and the first lower plate 118 .

In this embodiment, unless otherwise specified, the back side of the power supply device 100 is the rear side and the front side is the front side with the main body attached to the pole 109 . Also, the vertical direction with respect to the ground is defined as the up-down direction, and the left-right direction as viewed from the front side of the power supply device 100 is defined as the left-right direction.

The first body portion 111 can accommodate the first substrate 150 and the second substrate 151 in the inner space.

The first substrate 150 and the second substrate 151 are rigid substrates whose base material is glass epoxy resin. On the first substrate 150, electronic components such as a power supply circuit (FIG. 5), at least two relays 170, and a thermal conduction member 180 that abuts on the legs of the relays 170 and dissipates the heat of the relays are mounted. The first substrate 150 is attached to the first bottom plate 114 of the first body portion 111 with the substrate surface on which the electronic components, the relay 170 and the heat conducting member 180 are arranged facing the first opening 113 side.

The first substrate 150 is attached closer to the bottom (first bottom plate 114 ) than at least 1/2 of the depth of the first main body 111 . By adopting such a structure, the first substrate 15
Since the distance 0 is far from the first opening 113, it is possible to suppress the intrusion of rainwater, and an improvement in the waterproof function can be expected.

As shown in FIG. 5, wiring 200 from power system 108 is connected to input section 1 of power line terminal block 140 .
57 and the power line 104 is connected to the output 158 of the power line terminal block 140 .
An input portion 157 and an output portion 158 of the power line terminal block 140 are connected by a pair of power paths 159 , and two relays 170 are interposed in each of the pair of power paths 159 .

AC power supplied from the power system 108 is supplied to the input portion 157 of the power line terminal block 140 and the output portion 158 of the power line terminal block 140 via the relay 170, and the power line terminal block 14
0 to the mobile body 106 via the power line 104 and the plug portion 103 connected to the power line 104.
is supplied to the storage battery 107 of .

The power supply device 100 also includes a control unit 160 for opening and closing the relay 170 .
06 via a communication line 161, and the relay 170 is opened and closed according to a charge/discharge command from the moving body 106 side.

The relay 170 need only be controllable by the control unit 160. In the present embodiment, the relay 170 is a mechanical relay having mechanical contacts, but may be a semiconductor relay having no mechanical contacts, and is not particularly limited. .

The first body portion 111 includes a first left side plate 115, a first right side plate 116, a first upper side plate 117, a first
A first flange 119 is provided that extends outward (outer peripheral side of the first body portion 111 ) from the edge forming the first opening 113 of the lower plate 118 .

A first flange 119 extending from the first upper plate 117 and a first flange extending from the first lower plate 118
The flange 119 is provided with a first screw hole 121 for fixing the first lid portion 112 with a screw. The number of first screw holes 121 is one, but may be two or more and is not particularly limited. Also, the first screw holes 121 may be provided in other flanges extending from the side plates 115 and 116 .

The first lid portion 112 has a box shape with an opening, a substantially rectangular second bottom plate 122, and four side plates extending substantially perpendicularly to the second bottom plate 122 from the periphery of the second bottom plate 122, that is, It consists of a second left plate 123 , a second right plate 124 , a second upper plate 125 and a second lower plate 126 .

The first lid portion 112 extends outward from the edges forming the openings of the second left side plate 123, the second right side plate 124, the second upper side plate 125, and the second lower side plate 126 (the outer peripheral side of the first lid portion 112). A second flange 127 is provided that extends to. The second flange 127 has approximately the same size as the first flange (
or slightly smaller) and shape.

A second flange 127 extending from the second upper plate 125 and a second flange extending from the second lower plate 126
The flange 127 is provided with a notch 129 for connecting the first lid portion 112 to the first flange 119 of the first body portion 111 with screws. By adopting such a structure, the first lid portion 112 can be detachably attached to the first opening portion 113 and can seal the inside of the first main body portion 111 . In addition, when sealing, a packing (not shown) is sandwiched between the first body portion 111 and the first lid portion 112 to improve the waterproof performance.

Lengths in the front-rear direction of the first left side plate 115 and the first right side plate 116 (depth of the first main body portion 111)
is designed to be longer than the longitudinal length of the second left side plate 123 and the second right side plate 124 (the depth of the first lid portion), so that the first lid portion 112 is the first body portion. It has a box shape with a shallower depth dimension than 111 . A peripheral wall rises from the outer periphery of the first flange 119, and the length of the peripheral wall in the front-rear direction is substantially the same as the length of the first cover portion 112 in the front-rear direction.
A first lid 112 can be housed within the flange 119 . Therefore, the first body portion 1
11 and the first lid portion 112 (the mating surface of the first flange 119 and the second flange 127) is formed inside the first main body, the waterproof performance can be enhanced.

The second main body portion 131 of the outer box 130 is formed in a box shape having a second opening portion 133 with one end face open, and includes a substantially rectangular third bottom plate 134 and a third bottom plate extending from the periphery of the third bottom plate 134 to the third bottom plate. 134
Up, down, left and right four side plates extending substantially perpendicularly to the third left side plate 135 and the third right side plate 13
6, a third upper plate 137 and a third lower plate 138; The outer surface of the third bottom plate 134 corresponds to the rear surface of the power supply device 100 and is brought into contact with the construction surface 102 described above.

The third lower plate 138 has a substantially circular insertion hole formed in the second body portion 131 for inserting the power line 104 and the wiring 200 to be described later. The shape of the insertion hole may be rectangular and is not particularly limited. In order to enhance the waterproof function, the insertion hole may be provided with, for example, a rubber packing, or the insertion hole may be closed by filling the periphery with putty or the like after the power line 104 and the wiring 200 are wired. May be.

The second lid portion 132 has a box-like shape with an opening, a substantially rectangular fourth bottom plate 141, four side plates extending from the periphery of the fourth bottom plate 141 substantially perpendicularly to the fourth bottom plate 141, that is, It comprises a fourth left plate 142 , a fourth right plate 143 , a fourth upper plate 144 and a fourth lower plate 145 .

Lengths in the front-rear direction of the third left side plate 135 and the third right side plate 136 (depth of the second main body portion 131)
is the length in the front-rear direction of the fourth left side plate 142 and the fourth right side plate 143 (the depth of the second lid portion 132)
Since the second lid portion 132 is designed to be longer than the second main body portion 131 , the second lid portion 132 has a box shape with a shallower depth dimension than the second main body portion 131 .

The inner box 110 is configured such that the first opening 113 is covered with the first lid 112 and the first main body 111 is closed.
side facing the second opening 133 (positioned on the second opening 133 side),
It is housed in the second body portion 131 and attached to the third bottom plate 134 of the outer box. The second lid portion 132 is attached and fixed to the second main body portion 131 by screwing in a state where the second lid portion 132 covers the second opening portion 133 so as to cover the second opening portion 133, and the inner box 110 is attached to the outer box. 130 is sealed. Also, when sealing, a packing is sandwiched between the second body portion 131 and the second lid portion 132 (not shown).
This improves the waterproof performance.

With this configuration, the surface where the first lid portion 112 and the first main body portion 111 meet (boundary surface of the inner box) faces the back side of the power supply device 100 (the side of the third bottom plate 134 of the second main body portion 131). The power supply device 1 is a surface (boundary surface of the outer box) where the second lid portion 132 and the second main body portion 131 are arranged.
00 (on the side of the second opening 133 of the second main body 131), and these boundary surfaces can be separated from each other. As a result, even if rainwater intrudes, a distance is created between the boundary surface of the outer box and the boundary surface of the inner box, making it difficult for rainwater to enter the inner box, thereby improving the reliability of the waterproof function.

As shown in FIG. 3, the length of the inner box 110 in the vertical direction is approximately two-thirds the length of the outer box 130 in the vertical direction. 130 is attached.
Therefore, a space 139 is formed under the outer casing 130 . This space 139 serves as a space 139 in which the power line terminal block 140 and the power lines 104 and wires 200 connected to the power line terminal block 140 are accommodated. The power line terminal block 140 is arranged adjacent to the first lower plate 118 on the outer periphery of the inner box 110 . The length of the inner box 110 in the vertical direction may be about 1/2 or about 1/4 of the length of the outer box 130 in the vertical direction, and is particularly limited. never.

REFERENCE SIGNS LIST 100 power supply device 101 main unit 102 construction surface 103 plug unit 104 power line 105 holding unit 106 moving body 107 storage battery 108 electric power system 109 pole 110 inner box (housing)
111 first main body 112 first lid 130 outer case 131 second main body 132 second lid 150 first substrate 151 second substrate

Claims (4)

In a power supply device that outputs power to a power line for charging a storage battery used as a power source for a mobile object,
an inner box for housing a substrate on which electronic components are mounted;
an outer box that houses the inner box,
The inner box has a first body portion having a first opening,
The outer box has a second body portion having a second opening, and a cover portion that closes the second opening and has a shallower bottom than the second body portion,
The inner box is disposed in the second main body such that the bottom side of the first main body of the inner box is positioned on the second opening side ,
the substrate is attached to the bottom of the first body;
A power supply device characterized by : 2. The power supply device according to claim 1, wherein a terminal block to which the power line is connected is arranged on the outer periphery of the first main body. 3. The power supply device according to claim 1, wherein the inner box is arranged above the outer box, and a space through which the power line passes is provided below the inner box. The inner box further has a lid portion that closes the first opening and has a shallower bottom than the first body portion,
The power supply device according to any one of claims 1 to 3, wherein the lid portion of the inner box is installed inside the first body portion.

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