JP2019187145A - Charger - Google Patents

Abstract

To provide a charger having better heat radiation than the conventional converter and can reduce the influence of heat radiation upon other equipment.SOLUTION: A power supply unit 15 of a charger 1 includes a heat sink 57 having a converter circuit 55, which includes a plurality of semiconductor switching elements, and a plurality of semiconductor switching elements mounted in a heat transmittable manner, inside a duct 53 which has a first intake port 45, a second intake port 47 having openings on the power reception unit 13 side, a first exhaust port 49 and a second exhaust port 51. Inside the duct 53, there are independently configured a first passage 59, which houses the heat sink 57 and exhausts from the first exhaust port 49 air which is taken in from the first intake port 45, and a second passage 61, which houses the converter circuit 55 and exhausts from the second exhaust port 51 air which is taken in from the second intake port 47.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a charging device for charging a capacitor or the like mounted on a plug-in type vehicle.

  Japanese Patent Laying-Open No. 2016-47007 (Patent Document 1) includes a DC power supply unit including a power reception unit including a transformer and a power supply unit including a converter, and a power supply control unit that controls the DC power supply unit based on a control command. , Connected to a power supply control unit that outputs a control command and a plug-in connector of the plug-in type vehicle, and supplies DC power output from the DC power source unit controlled by the power source control unit to the capacitor of the plug-in type vehicle A conventional example of a charging device including a power plug and a housing in which at least a DC power supply unit, a power supply control unit, and a power supply control unit are housed is disclosed. In this conventional charging device, the housing includes a power storage chamber in which at least the power receiving unit and the power supply unit are stored, and an inspection door provided for the power storage chamber. In the state where the power supply unit is arranged and the inspection door is opened, the structure in the power supply storage chamber is configured so that at least the power supply unit can be pulled out of the housing via the slide mechanism.

  Japanese Patent Laying-Open No. 2013-85367 (Patent Document 2) discloses a cooling structure in which a fan that cools internal devices of a housing by pushing outside air into the housing is disclosed at the top of the housing.

JP 2016-47007 A JP 2013-85367 A

  However, Japanese Patent Laying-Open No. 2016-47007 (Patent Document 1) does not particularly disclose the heat dissipation structure of the power supply unit. A simple cooling structure that can be employed in the structure of Patent Document 1 is to attach a fan that introduces outside air from the outside of the housing to the housing, as in the cooling structure shown in Patent Document 2. However, when such a structure is adopted, when the outside air temperature becomes high, cooling of the converter that generates the largest amount of heat becomes insufficient and there is a possibility that sufficient charging performance cannot be exhibited. Also, the heat dissipated from the converter may affect other devices.

  An object of the present invention is to provide a charging device that can improve the heat radiation of a converter as compared with the conventional one and further reduce the influence of the heat radiation to other devices.

  The charging device of the present invention includes a DC power supply unit including a power reception unit including a transformer and a power supply unit including a converter circuit, a power supply control unit that controls the DC power supply unit based on the control command, and a power supply that outputs the control command A control unit and a housing in which at least a DC power supply unit, a power supply control unit, and a power supply control unit are housed are provided. In the charging device according to the present invention, the housing includes a power storage chamber in which at least the power reception unit and the power supply unit are stored, and an inspection door provided for the power supply storage chamber. The power supply unit is arranged in the. Furthermore, in the charging device of the present invention, a plurality of power supply units are provided in a duct having a first air inlet and a second air inlet that open to the power receiving unit, and a first air outlet and a second air outlet. And a heat sink on which a plurality of semiconductor switching elements are mounted so as to be able to transfer heat. In addition, in the duct, a heat sink is housed and a first passage for housing the air sucked from the first air inlet is discharged from the first air outlet, and a converter circuit is housed and the second air inlet. The second passages for discharging the air taken in from the second exhaust port are independently configured.

  According to the present invention, the heat radiation from the heat sink and the heat radiation from the semiconductor switching element of the converter circuit are discharged to the outside of the housing through the independent first passage and the second passage. It is possible to provide a charging device that is prevented as much as possible and has higher heat dissipation performance than conventional ones.

  Further, it is preferable that the structure in the power storage chamber is configured such that at least the power supply unit can be pulled out of the housing via the slide mechanism in a state where the inspection door is opened. In this way, assembly and maintenance are facilitated.

  In the lower region of the housing, a vent for introducing air outside the housing is formed in a portion where the power receiving portion of the power storage chamber is accommodated, and air is introduced into the first passage at the first intake port. A push-in blower that pushes in is disposed, and an induction blower that draws air from the second air inlet through the internal passage of the heat sink is preferably disposed in the second passage.

  If such a configuration is adopted, the heat radiation from the power receiving unit located under the power source unit can be dispersed and absorbed and radiated through the first passage and the second passage. When the blower is disposed, heat radiation from the converter circuit having a large air resistance can be reliably performed. In addition, when a pusher blower is used for the first passage in which the heat sink having a low air resistance is accommodated for improving the heat dissipation performance, the cooling performance can be sufficiently exhibited.

  The housing is preferably fitted with an exhaust duct that is in airtight communication with the first exhaust port and the second exhaust port with the duct disposed at a fixed position. With such an exhaust hole, heat from the duct does not leak into the housing, and mounting and drawing out of the duct into the housing is facilitated.

  A control unit storage chamber in which the power supply control unit and the power supply control unit are stored is formed on the power supply unit so as to communicate with the power supply storage chamber. It is preferable that a blower that introduces air into the control unit storage chamber and exhausts the air out of the housing is stored. Providing such a blower can suppress an increase in the temperature of the space in the housing located outside the duct.

  Further, a filter for removing dust containing salt or volcanic ash is preferably attached to the vent of the housing. If such a filter is used, the occurrence of an internal short circuit due to dust accumulation can be prevented.

  Moreover, you may connect the discharge port of the filter apparatus which takes the dust containing salt or volcanic ash to the vent hole of a housing. If the filter device is arranged outside the housing, the filtering process can be performed over a long period of time, so that the number of maintenance can be reduced.

(A) is a front view showing one embodiment of the charging device according to the present invention, (B) is a right side view of the same charging device. It is a right view which shows a mode that the DC power supply part in the charging device of FIG. 1 is pulled out of the housing. FIG. 2 is a right side view schematically showing an air passage of a power supply unit in the charging device of FIG. 1. (A) thru | or (C) is a figure which shows the structure of a heat sink. It is a perspective view which shows the charging device of FIG. 1 which attached the filter to the ventilation hole of the housing. It is a perspective view which shows the charging device of FIG. 1 which mounted | wore the ventilation port of the housing with the discharge port of the filter apparatus.

  Hereinafter, the charging device of the present invention will be described in detail with reference to the accompanying drawings. 1A is a front view of a charging device 1 according to an embodiment of the present invention, FIG. 1B is a right side view thereof, and FIG. 2 shows a state in which the DC power supply unit 3 is pulled out of the housing 11. It is a right view. Although the members housed in the housing 11 are usually not visible from the outside, in FIGS. 1A and 1B, the members housed in the housing 11 are conceptually shown by broken lines for convenience. It is. Moreover, in FIG. 2, in order to demonstrate the outline | summary of 1st Embodiment, the member unnecessary on description is abbreviate | omitted and simplified.

  The charging device 1 mainly includes a DC power supply unit 3, a power supply control unit 5, a power supply control unit 7, a power plug 9, and a housing 11. The DC power supply unit 3 includes a power reception unit 13 including a transformer (not shown) and a power supply unit 15 including a converter (shown in FIG. 3). The power receiving unit 13 receives AC power from a commercial power source, transforms it and sends it to the power source unit 15, and the power source unit 15 converts the AC power sent from the power receiving unit 13 into DC power. The power supply control unit 5 controls the DC power supply unit 3 based on a control command from the power supply control unit 7 and supplies DC power to the power plug 9. The power supply control unit 7 transmits a control command according to the operation of the touch panel by the user. In FIG. 1, the power supply control unit 5, the power reception unit 13, and the power supply unit 15 are illustrated as blocks, but actually have a structure in which a plurality of components are mounted on a frame member.

  The power plug 9 is connected to a plug-in connector of a plug-in type vehicle to be charged (not shown), and supplies DC power output from the DC power source unit 3 controlled by the power source control unit 5 to the capacitor of the plug-in type vehicle. To do. The power plug 9 is connected to the power control unit 5 by a power feeding cable 17 and is held by a plug holder 19 provided on the right outer wall surface of the housing 11 in a standby state where charging is not performed.

  The housing 11 has a rectangular parallelepiped shape. As shown in FIG. 2, the interior of the housing 11 is accommodated in the power storage chamber 23 and the control unit by a partition plate 22 that extends horizontally between the left and right inner wall surfaces of the housing 11. The chamber 25 is partitioned so that air can communicate with each other, and the current control unit 5 is placed on the partition plate 22. An inspection door 27 is provided on the front portion of the housing 11. In the power storage chamber 23, the power supply unit 15 is disposed on the power reception unit 13. Note that the buttons indicated by reference numerals 21A and 21B in FIG. 1A are an operation start button and an operation stop button.

  As shown in FIG. 2, a power supply control unit connection plug 29 that inputs and outputs power and control signals is provided in the rear side region of the power supply unit 15. The power control unit connection plug 29 is inserted into the power control unit receptacle 31 disposed in the power storage chamber 23 electrically connected to the power control unit 5 and constitutes a connector structure. With this connector structure, the power supply unit 15 and the power supply control unit 5, that is, the DC power supply unit 3 and the power supply control unit 5 are connected.

  A lower region in the power storage chamber 23 is provided with a slide mechanism including a pair of guide rails 33 and 33 and a pair of sliders 35 and 35. The pair of guide rails 33, 33 are provided on the side surface portion of the housing 11 that sandwiches the lower region in the power storage chamber 23. The pair of sliders 35, 35 are provided on the side surfaces of a plate-like support (not shown) provided with casters 39, and are configured to slidably engage with the pair of guide rails 33, 33. ing. A DC power supply unit 3 is placed on the support, and the DC power supply unit 3 can be pulled out of the housing 11 through a slide mechanism. When the support body 37 is pulled forward, the casters 39 support the front portion of the support body 37, so that the sliders 35 and 35 slide smoothly on the guide rails 33 and 33.

  FIG. 2 is a schematic right side view showing how the power supply unit 3 is pulled out of the housing 11. When performing maintenance / inspection of the DC power supply unit 3, the DC power supply unit 3 can be accessed by opening the inspection door 27 (not shown in FIG. 2) to the side, and the housing 11 can be easily accessed by the slide mechanism. Can be pulled out. When the DC power supply unit 3 is pulled out, the power supply control unit connection plug 29 is pulled out from the power supply control unit receptacle 31 at the same time, so that the power supply unit 15 is not electrically connected.

  Thus, since the structure inside the power storage chamber 23 is configured so that the power supply unit 3 can be pulled out of the housing 11 via the slide mechanism in a state where the inspection door 27 is opened, assembly and maintenance are easy. It is.

  The housing 11 is erected on the ground via a base 41 that can be fixed on the ground. The base 41 has a rectangular parallelepiped shape with an upper surface opened, and vent holes (not shown) are provided on both side surfaces and the rear surface of the base 41. The housing 11 is fixed to the base 41 at the bottom surface, and an opening (not shown) for allowing air to communicate with the base 41 is provided on the bottom surface. Further, two upper and lower vents 43, 43 are provided on the right side surface of the housing 11 at the side of the power storage chamber 23. A vent hole for introducing air outside the housing 11 is formed in a portion in which is stored.

  The charging device 1 of the present embodiment includes an air-cooling type cooling structure that cools each device by introducing air from the outside of the housing 11. The main air flow is as shown by the arrows in FIG. That is, the outside air intake air A flowing in the direction indicated by the thin solid arrow passes through the vent hole of the base 41 and the vent hole 43 of the housing 11 to the bottom of the power receiving chamber 13 in the housing 11 where the power receiving unit 13 is accommodated. And taken in from the right side. The taken outside air intake air A is exhausted out of the housing 11 after cooling each device constituting the charging apparatus 1 while proceeding through the three main passages. The cooling air flowing in the respective passages flows in a direction indicated by a first air flow V1 flowing in a direction indicated by a double line arrow, a second air flow V2 flowing in a direction indicated by a one-dot chain line arrow, and a thick solid line arrow. This is the third ventilation V3.

  FIG. 3 is a right side view schematically showing an air passage of the power supply unit 15 in the charging apparatus 1. As shown in the figure, the power supply unit 15 includes a duct having a first intake port 45 and a second intake port 47 that open to the power receiving unit 13 side, and a first exhaust port 49 and a second exhaust port 51. 53 includes a converter circuit 55 including a plurality of semiconductor switching elements (not shown) and a heat sink 57 on which the plurality of semiconductor switching elements are mounted so as to be able to transfer heat. In addition, the duct 53 accommodates the heat sink 57 and the first passage 59 for discharging the air sucked from the first intake port 45 from the first exhaust port 49 and the converter circuit 55. In addition, the second passages 61 for discharging the air sucked from the second air inlet 47 from the second air outlet 51 are independently configured. 4A to 4C are a left side view, a front view, and a right side view showing the structure of the heat sink 57 used in the present embodiment. The heat sink 57 used in this embodiment. It is formed by extrusion molding and includes a plurality of internal passages 57A extending from one end to the other end.

  A first blower 63 that pushes air into the first passage 59 is disposed in the first intake port 45, and the second intake passage 47 is inserted into the second passage 61 from the second intake port 47 via the internal passage 57 </ b> A of the heat sink 57. An induction blower 65 that draws air is arranged. With such a configuration, the heat radiation from the power receiving unit 13 located under the power supply unit 15 can be dispersed and absorbed and radiated through the first passage 59 and the second passage 61. In particular, if the induction blower 65 is disposed in the second passage 61, the heat radiation from the converter circuit 55 having a large air resistance can be reliably performed. Further, when the blower 63 is used for the first passage 59 in which the heat sink 57 having a low air resistance is accommodated in order to improve the heat radiation performance, the cooling performance can be sufficiently exhibited.

  An exhaust duct 71 having an exhaust hole in airtight communication with the first exhaust port 49 and the second exhaust port 51 is attached to the housing 11 in a state where the duct 53 is disposed at a fixed position. The exhaust duct 71 has a structure for exhausting exhaust gas downward. With such an exhaust duct 71, heat does not leak due to ventilation from the duct 53 in the housing 11, and mounting and drawing out of the duct 53 into the housing 11 is facilitated. In the charging device 1 according to the present embodiment, the DC power supply unit 3 is pulled out of the housing 11 as shown in FIG. The first exhaust port 49 and the second exhaust port 51 are designed so that the first exhaust port 49 and the second exhaust port 51 communicate with the exhaust duct 71 in an airtight manner.

  Comparison experiment of cooling performance between the case where the pushing fan 63 is provided below the heat sink 57 and the induction fan provided above the heat sink 57 as in the present embodiment. As a result, it was confirmed that the former can lower the temperature of the heat sink 57. In addition, as in this embodiment, a comparative experiment of cooling performance was performed for the case where the induction blower 65 is arranged in the second passage 61 and the case where the pusher blower is arranged outside the second intake port 47. However, it has been confirmed that the former can lower the temperature of the converter circuit 55. In this Embodiment, the arrangement position of each air blower is determined based on this confirmation result. Of course, the type and arrangement position of the blower can be appropriately changed according to the situation.

  In the specification of the present application, “airtight” is not a strict one that completely prevents the leakage of gas between the exhaust ports 49 and 51 and the exhaust holes of the exhaust duct 71, and occurs during normal operation. Regardless of the movement speed of each ventilation and the pressure difference between the inside of the duct 53 and the housing 11, the airtightness is such that the ventilation does not substantially leak between the exhaust ports 49 and 51 and the exhaust duct 71. It ’s enough.

  The third ventilation V <b> 3 is introduced into the control unit storage chamber 25 from the ventilation hole of the base 41 and the ventilation hole 43 of the housing 11, and is discharged from the third exhaust hole 67. That is, a control unit storage chamber 25 in which the power supply control unit 5 and the power supply control unit 7 are stored on the power supply unit 15 is formed in communication with the power supply storage chamber 23. A blower 69 that introduces air into the control unit storage chamber 25 from the vent through the periphery of the duct 53 and discharges the air outside the housing 11 is stored. If such a blower 69 is provided, an increase in the temperature of the space in the housing 11 located outside the duct 53 can be suppressed.

  Further, as shown in FIG. 5, a filter 73 that removes dust containing salt or volcanic ash may be attached to the vent 43 of the housing 11 of the charging device 1. If such a filter 73 is used when the charging device 1 is installed near the seaside or a volcano, it is possible to prevent the occurrence of internal short circuit due to corrosion due to sea salt particles and accumulation of dust.

  Furthermore, as shown in FIG. 6, the air outlet 43 of the housing 11 of the charging device 1 may be connected to a discharge port of a filter device 75 that removes dust containing salt or volcanic ash. If the filter device 75 is disposed outside the housing 11, the filter process can be performed over a long period of time, so that the number of maintenance can be reduced.

  As described above, according to the charging device 1 of the present embodiment, the heat radiation from the heat sink 57 and the heat radiation from the semiconductor switching element of the converter circuit 55 are respectively separated through the first passage 59 and the second passage 61. Therefore, it is possible to provide a charging device that prevents heat leakage to the inside of the housing 11 as much as possible and has higher heat dissipation performance than the conventional one.

  Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the embodiments, and can of course be modified within the scope of the technical idea of the present invention. .

  ADVANTAGE OF THE INVENTION According to this invention, the charging device which can make the heat dissipation of a converter better than before, and can make the influence of the heat radiation to another apparatus small can be provided.

DESCRIPTION OF SYMBOLS 1 Charger 3 DC power supply part 5 Power supply control part 7 Power supply control part 9 Power supply plug 11 Housing 13 Power reception part 15 Power supply part 17 Power supply cable 19 Plug holder 22 Partition plate 23 Power supply storage room 25 Control part storage room 27 Inspection door 29 Power supply control Part connection plug 31 Power supply control part receptacle 33 Guide rail 35 Slider 39 Caster 41 Base 43 Ventilation hole 45 First intake port 47 Second intake port 49 First exhaust port 51 Second exhaust port 53 Duct 55 Converter circuit 57 Heat sink 59 First passage 61 Second passage 63 Push-in fan 65 Induction fan 67 Third exhaust port 69 Blower 71 Exhaust duct 73 Filter 75 Filter device A Outside air intake V1 First ventilation V2 Second ventilation V3 Third Ventilation

Claims (7)

A DC power supply unit comprising a power reception unit including a transformer and a power supply unit including a converter;
A power supply control unit for controlling the DC power supply unit based on a control command;
A power supply control unit for outputting the control command;
A power feeding unit that supplies DC power output from the DC power source unit controlled by the power source control unit to a capacitor,
A housing in which at least the DC power supply unit, the power supply control unit, and the power supply control unit are housed,
The housing includes a power storage chamber in which at least the power reception unit and the power supply unit are stored, and an inspection door provided for the power storage chamber,
In the power storage chamber, the power supply unit is disposed on the power receiving unit, the charging device,
The power supply unit includes a plurality of semiconductor switching elements in a duct having a first intake port, a second intake port, a first exhaust port, and a second exhaust port that are open to the power receiving unit side. The circuit and the plurality of semiconductor switching elements are provided with a heat sink mounted so as to be capable of transferring heat,
Inside the duct is a first passage that houses the heat sink and discharges air taken in from the first air inlet through the first air outlet, and stores the converter circuit and the second air. 2. A charging apparatus according to claim 1, wherein each of the second passages for discharging the air sucked from the intake port from the second exhaust port is configured independently.   2. The charging device according to claim 1, wherein in the state in which the inspection door is opened, a structure in the power storage chamber is configured such that at least the power supply unit can be pulled out of the housing via a slide mechanism. In the lower region of the housing, a vent hole for introducing air outside the housing is formed in a portion where the power receiving unit of the power storage chamber is stored,
A pusher blower that pushes air into the first passage is disposed at the first air inlet,
2. The charging device according to claim 1, wherein an induction blower that draws air from the second intake port via an internal passage of the heat sink is disposed in the second passage.   4. An exhaust duct that is in airtight communication with the first exhaust port and the second exhaust port in a state where the duct is disposed at a fixed position is attached to the housing. The charging device according to Item 1. A control unit storage chamber in which the power supply control unit and the power supply control unit are stored on the power supply unit is formed in communication with the power supply chamber.
The blower which introduces air into the control part storage room through the circumference of the duct from the vent and discharges air out of the housing is stored in the inside of the control part storage room. The charging device described.   The charging device according to claim 3, wherein a filter for removing dust containing salt or volcanic ash is attached to the vent hole of the housing.   The charging device according to claim 3, wherein a discharge port of a filter device that removes dust containing salt or volcanic ash is connected to the ventilation port of the housing.

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