JP2017168184A - Power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable power supply device having an opened socket and enhanced waterproofness.SOLUTION: A power supply device includes a socket portion 15 that is electrically connected to a circuit board 30 and outputs power from plural secondary batteries 22 to an electric device. The socket portion 15 is formed in a bottomed tubular shape having an opened upper end in a posture in which a main body case 10 thereof is self-standing, and a socket drain hole 15b is formed in the bottom surface. The circuit board 30 is held in the main body case 10 so as to be in a vertical posture with the main body case 10 being in self-standing. The plural secondary batteries 22 are held by a battery holder 20 in the main body case 10 so that the vertical posture is set in the longitudinal direction thereof in the posture in which the main body case 10 is self-standing. In the posture in which the main body case 10 is self-standing, a main body drain hole is opened in the bottom surface of the main body case, thereby causing the main body drain hole and the socket drain hole 15b to intercommunicate with each other.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a power supply device incorporating a rechargeable secondary battery, and more particularly to a power supply device that can be used as a portable power supply capable of supplying power to an externally connected electrical device.

  With the widespread use of portable devices, portable power supply devices called auxiliary power supplies and boosters have been developed and provided. Such a portable power supply device has a built-in secondary battery, receives power from the outside, charges the built-in secondary battery, and discharges the secondary battery to supply power to external devices. Supply.

  As such a portable power supply device, a device incorporating a pair of cylindrical batteries has been developed (see Patent Document 1). This portable power supply device is used as a portable power supply for electrical equipment as shown in the exploded perspective view of FIG. 20, and an insulating holder 203 is disposed between a pair of cylindrical batteries 201. The cylindrical battery 201 and the circuit board 204 are arranged at fixed positions with the insulating holder 203 to form a battery assembly 209, and the battery assembly 209 is accommodated in the outer case 202.

  Since such a portable power supply device can be used outdoors, waterproofing is required. On the other hand, when considering a configuration in which a discharge socket is provided in consideration of versatility, considering the ease of attaching and detaching the socket and design, the upper end side as in the portable power supply device 210 shown in FIG. It is conceivable to open the socket.

  However, in this configuration, water may enter from the opening of the socket. In particular, in the posture in which the portable power supply device is erected as shown in FIG. 21, since the opening portion of the socket opens on the upper surface side, water tends to accumulate in the bottomed cylindrical portion of the socket. The socket part is an energized part and is connected to an electronic circuit. For this reason, when moisture enters from the opening of the socket, there is a problem that it is difficult to ensure waterproofness.

JP 2013-246906 A

  The present invention has been made to solve such conventional problems. An object of the present invention is to improve waterproofness in a portable power supply device having a socket opened.

  In order to achieve the above object, according to the power supply device of the present invention, the power supply device is for connecting and supplying power to an electric power supply target, and can be self-supporting in a posture in which the longitudinal direction is the vertical direction. A main body case, a plurality of secondary batteries built in the main body case, a battery holder for holding the plurality of secondary batteries, and an electronic circuit electrically connected to the plurality of secondary batteries are mounted. And a socket part that is electrically connected to the circuit board and outputs outputs from the plurality of secondary batteries to the electrical device, and the socket part makes the main body case self-supporting. In the posture, it is formed in a bottom-bottomed cylindrical shape with the upper end opened, a socket drain hole is formed on the bottom surface, and the circuit board is in a vertical posture in a posture in which the body case is self-supporting, In the body case The plurality of secondary batteries are held by a battery holder in the main body case so that the longitudinal direction thereof is a vertical posture in a posture in which the main body case is self-supported. The main body drain hole is opened in the bottom face with the posture made to be able to communicate with the main body drain hole and the socket drain hole. With the above configuration, even if moisture enters the socket part in a state where the main body case is self-supporting, it can be discharged to the outside through the socket drain hole and the main body drain hole. In addition, since the circuit board and the secondary battery are in an upright posture, it is possible to avoid a situation where they are submerged and improve reliability.

  Moreover, according to the power supply device of this invention, the holder fixing tool which fixes the said battery holder only by the side surface of the said main body case can be further provided. With the above configuration, a heavy battery holder that holds a plurality of secondary batteries is supported in the main body case from the side, so that the battery holder is lifted in the main body case and absorbs shock to external force. Can be increased.

  According to the power supply device of the present invention, the circuit board disposed on the one surface of the battery holder is further fixed to the inner surface of the main body case, and the switch provided on the circuit board. And a switch operation unit that is linked to the switch unit and is exposed from a part of the main body case to operate the switch unit. With the configuration described above, the circuit board disposed on the battery holder is fixed to the inner surface of the main body case, so that the switch operating portion and the main body case can be easily positioned.

  Further, according to the power supply device of the present invention, the light emitting unit provided at a position facing the central part of the switch operation unit, and the peripheral part of the switch operation unit according to the pushing operation of the switch operation unit, A switch connecting part that presses the switch part provided at a position facing the switch part or a position not facing the switch operation part may be provided. With the above configuration, the light emitting unit can be arranged at the position of the switch operating unit and the switch operating unit can emit light, and the switch unit is operated by the switch operating unit via the switch connecting unit. As a result, the stroke of the switch operation unit can be increased, and an erroneous operation can be avoided to enhance the click feeling of pushing.

  Furthermore, according to the power supply device of the present invention, the switch operation unit and the substrate fixture can be arranged linearly in the main body case. With the above configuration, the circuit board is positioned and arranged in the main body case by the board fixing tool, so that the switch operation unit can be positioned at the same time.

  Furthermore, according to the power supply device of the present invention, a curved cover portion covering the upper surface of the circuit board can be further provided. With the above configuration, the components mounted on the circuit board can be protected by the cover portion.

  Furthermore, according to the power supply device of the present invention, it is possible to further include a waterproof bag that opens in one direction and houses and covers the plurality of secondary batteries and the circuit board. With the above configuration, even if liquid enters the main body case from the socket side, it is possible to prevent the secondary battery and the circuit board from getting wet with the waterproof bag and causing unintended conduction and corrosion.

  Furthermore, according to the power supply device which concerns on a 7th side surface, the said waterproof bag can position the opening end to the downward side in the attitude | position which made the said main body case self-supporting. With the above configuration, even if liquid enters the main body case from the socket side, the risk that the liquid enters the waterproof bag can be reduced by setting the opening end of the waterproof bag not to open upward.

  Furthermore, according to the power supply device which concerns on an 8th side surface, the output unit which can be further inserted in the said socket part and can be connected can be provided. With the above configuration, the power supply device can be used for various purposes by replacing the output unit that is detachably attached to the socket portion.

  Furthermore, according to the power supply device of the present invention, it is possible to further include a lock mechanism that locks the output unit so that the output unit does not fall out in a state where the output unit is inserted into the socket portion. With the above configuration, it is possible to avoid a situation in which an output unit that is detachably attached to the socket part is unintentionally dropped, and an advantage that it can be used with high reliability is obtained.

  Furthermore, according to the power supply device of the present invention, the locking mechanism includes a flange portion provided so as to protrude at a joint portion of the output unit with the vicinity of the opening of the socket portion, and the output unit of the socket portion. A groove portion formed at a position corresponding to the flange portion in a state of being inserted into the socket portion, and after the output unit is inserted into the socket portion, the output unit is rotated in the cylindrical direction of the socket portion. Then, the locking mechanism can be configured to lock the output unit by inserting the flange into the groove. With the above configuration, it is possible to easily lock the output unit after it is inserted into the socket portion, and to prevent unintentional disconnection with a simple configuration.

  Furthermore, according to the power supply device of the present invention, the output unit can include one or more USB output terminals. With the above configuration, an electric device including a general-purpose USB terminal can be charged with the power supply device, and convenience can be improved.

  Furthermore, according to the power supply device of the present invention, the socket portion can be formed in the same shape as the vehicle accessory socket. With the above configuration, an accessory socket device such as a cigar socket that is widely used for vehicles can be used in the power supply device, and the convenience can be further improved.

  Furthermore, according to the power supply device of the present invention, the outer can of the secondary battery can be cylindrical.

  According to the present invention, even if moisture enters the socket part in a state where the main body case is made self-supporting, it can be discharged to the outside through the socket drain hole and the main body drain hole. In addition, since the circuit board and the secondary battery are in an upright posture, it is possible to avoid a situation where they are submerged and improve reliability.

It is a perspective view which shows the external appearance of the portable power supply device which concerns on Embodiment 1 of this invention. It is the perspective view which looked at the portable power supply device of FIG. 1 from the back side. It is a see-through | perspective perspective view of the portable power supply device of FIG. FIG. 3 is a perspective view of the portable power supply device of FIG. 2. It is a disassembled perspective view of the portable power supply device of FIG. FIG. 6 is an exploded perspective view of the portable power supply device of FIG. 5. It is a disassembled perspective view which shows a mode that a battery assembly is inserted in a waterproof bag. It is a perspective view which shows a cover part. It is a disassembled perspective view of a battery assembly. It is a disassembled perspective view of a battery holder. It is a disassembled perspective view which shows a mode that various output units are mounted | worn with a portable power supply device. It is a horizontal sectional view in the XII-XII line of FIG. FIG. 3 is a vertical sectional view taken along line XIII-XIII in FIG. 1. FIG. 14A is an exploded perspective view of the front side showing the switch operating part and the light emitting part, and FIG. 14B is an exploded perspective view of the back side showing the switch operating part and the light emitting part. FIG. 15A is a schematic cross-sectional view showing the switch operation unit and the switch unit in a normal state, and FIG. 15B is a schematic cross-sectional view showing a state where the switch operation unit is pressed. It is a perspective view which shows an example of a decomposition | disassembly lock mechanism. It is a model vertical sectional view which shows the discharge route of the liquid which permeated from the socket part. It is a schematic sectional drawing which shows the example which hold | maintained the secondary battery in the horizontal attitude | position in the main body case. It is a schematic sectional drawing which shows the example which hold | maintained the circuit board in the horizontal attitude | position in the main body case. It is a disassembled perspective view which shows the conventional portable power supply device. It is a schematic perspective view which shows an example of the portable power supply device which the present inventors examined.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Example 1

A portable power supply device 100 according to a first embodiment of the present invention is shown in FIGS. The portable power supply device 100 shown in these drawings is a portable power supply device for connecting and supplying power to an electric device to be fed. Specifically, the portable power supply device 100 includes a main body case 10, a battery holder 20 built in the main body case 10, and a circuit board 30. As shown in FIGS. 1 to 4, the main body case 10 has a bottle-like appearance and is provided with a socket portion 15 having an upper end opened in an upright posture. An output unit 50 can be connected to the socket portion 15 as shown in FIG. 11 (details will be described later), and another electric device BD can be driven or power can be supplied via the output unit 50. That is, the portable power supply device 100 can output the predetermined power from the socket unit 15 by converting the outputs of the plurality of secondary batteries 22 held by the battery holder 20 by the discharge circuit mounted on the circuit board 30. . Note that the output unit 50 is also included in the electric device to be fed. That is, a form in which the output unit 50 itself performs some operation as a load is also included in the present invention.
(Main body case 10)

  The main body case 10 is extended in one direction, and has a shape that can stand by itself in a posture in which the longitudinal direction is the vertical direction. As shown in the exploded perspective view of FIG. 5, the main body case 10 includes an inner case 13 and an outer case 14 that covers the inner case 13. The outer case 14 is preferably made of metal and can improve strength. As shown in FIG. 1, the outer case 14 is provided with a switch operation unit 18 for operating discharge or the like slightly above the middle of the side surface. As shown in the rear view of FIG. 2, a charging terminal 19 is provided near the bottom surface. As shown in FIG. 11, an AC adapter AC can be connected to the charging terminal 19, and power is supplied from the AC adapter AC to feed a built-in secondary battery 22.

The switch operation unit 18 is provided above so that the user can easily operate it. On the other hand, the charging terminal 19 is provided near the bottom so that the AC adapter cord does not get in the way when the AC adapter is connected. The switch operation unit 18 and the power supply terminal are provided on substantially the opposite surface of the cylindrical main body case 10. Thereby, when a user operates the switch operation part 18, the charging terminal 19 is not visually recognized but it can improve appearance.
(Inner case 13)

  The inner case 13 is divided into a first case 11 and a second case 12 as shown in the exploded perspective view of FIG. The first case 11 and the second case 12 which are divided into two are connected and fixed by screws or the like. The inner case 13 is made of resin, exhibits insulation, and avoids unintended conduction with the secondary battery 22 and the circuit board 30 accommodated therein. Further, the resin inner case 13 is light in weight and can be obtained at a low cost.

  As shown in the exploded perspective view of FIG. 6, the battery holder 20 and the circuit board 30 are accommodated in the inner case 13. The battery holder 20 is a member that holds a plurality of secondary batteries 22. The battery holder 20 shown in FIG. 10 holds two secondary batteries 22 in parallel on each side, and holds a total of eight secondary batteries 22 on both sides. In this example, four secondary batteries 22 are connected in series, and two sets are connected in parallel.

Here, the secondary batteries 22 connected in series are connected in the longitudinal direction, and the battery connectors are arranged in parallel. In the example shown in FIGS. 10, 12, and 13, two secondary batteries 22 are connected in the length direction, and four battery connectors are stacked in parallel. Thereby, the secondary battery 22 can be arranged in the main body case 10 with a good weight balance.
(Secondary battery 22)

Each secondary battery 22 may be a battery having an outer can having a shape extended in one direction. Here, a cylindrical battery having a cylindrical outer can is employed. As the secondary battery 22, a known secondary battery such as a lithium ion secondary battery, a nickel hydride battery, or a nickel cadmium battery can be used as appropriate. In particular, a lithium ion secondary battery has a high energy density per volume, which is preferable in terms of size reduction and capacity increase. A lithium ion secondary battery having a standardized specification can be used. In this example, eight 18650 types are used to achieve 4200 Ah. However, these are only examples, and the present invention does not limit the type and number of secondary batteries to be used and the connection form such as series or parallel, and can be appropriately changed according to the application and required specifications.
(Circuit board 30)

Further, a circuit board 30 is arranged on the side surface of the battery holder 20 as shown in the exploded perspective view of FIG. An electronic circuit such as a discharge circuit or a charging circuit is mounted on the circuit board 30, and the secondary battery 22 held by the battery holder 20 is charged / discharged. Further, the light emitting unit 32 and the switch unit 33 are mounted on the circuit board 30 at different positions. The light emitting unit 32 is provided at a position of the main body case 10 facing the center of the switch operation unit 18. The light emitting unit 32 emits light according to the operation of the switch operation unit 18 or according to the operating state of the portable power supply device, and notifies the user of the state with the light emission color or light emission pattern. A semiconductor light emitting element such as a light emitting diode (LED) can be suitably used for such a light emitting unit 32.
(Switch connection part 34)

  The switch unit 33 is provided at a position facing the periphery of the switch operation unit or a position not facing the periphery of the switch operation unit. Therefore, the switch unit 33 is configured to interlock with the switch operation unit 18 via the switch connection unit 34, and when the user presses the switch operation unit 18 provided in the main body case 10, the switch connection unit 34 is moved. The operation is transmitted to the switch unit 33, and the operation of the portable power supply device is executed and stopped by the operation of the switch unit 33.

  With such a configuration, even if the switch unit 34 and the light emitting unit 32 cannot be provided at the same position, as shown in FIG. Visibility can be improved. That is, a member in which the push button and the LED are made common has been developed, but has a drawback that the size is large. For this reason, it is necessary to secure a certain amount of space between the inner surface of the main body case and the circuit board, which causes a problem that the main body case is increased in size. Therefore, in the present embodiment, such a member is not used, and the light emitting unit 32 and the switch unit 33 are mounted at different positions as separate members. Specifically, the light emitting unit 32 is disposed immediately below the switch operation unit 18, while the switch unit 33 is mounted next to the light emitting unit 32. In this state, the switch unit 33 is not located directly below the switch operation unit 18, so that even if the switch operation unit 18 is pressed, the switch unit 33 cannot be pressed.

  Therefore, as shown in the exploded perspective views of FIGS. 14A and 14B and the schematic cross-sectional views of FIGS. 15A and 15B, the switch connecting portion 34 is disposed so as to straddle the light emitting portion 32 and the switch portion 33. The switch connecting portion 34 is preferably a plate-like member having elasticity. By doing in this way, even if the position of the switch connection part 34 and the circuit board 30 shifts a little, the switch part 33 can be pushed down by the switch connection part 34.

The plate-like switch connecting portion 34 is arranged such that the free end side at the front end is arranged and separated from the switch portion 33 side, and the lower end of the switch operating portion 18 is in contact with the fixed end side at the rear end. In a normal state where the switch operating unit 18 is not pressed, the switch connecting unit 34 is separated from the switch unit 33 as shown in FIG. 15A. On the other hand, as shown in FIG. 15B, when the switch operation unit 18 is pressed, the protrusion at the lower end of the switch operation unit 18 touches the switch connecting unit 34. In this state, when the switch operating portion 18 is further pressed down against the elastic force of the switch connecting portion 34, the switch connecting portion 34 is deformed so as to bend accordingly. As a result, the free end side of the switch connecting portion 34 is deformed, the switch portion 33 is pressed, and as a result, the switch portion 33 is operated. With such a configuration, the switch unit 33 and the light emitting unit 32 can be arranged in a limited space saving. Furthermore, simply pressing the switch operation unit 18 does not depress the switch unit 33, but the force is transmitted to the switch unit 33 by firmly pressing the switch operation unit 18, so that the user touches the switch operation unit 18 by mistake. It is possible to avoid situations such as malfunctions that occur in As described above, it is possible to increase the stroke of the switch operation unit 18 and to avoid erroneous operations while enhancing the click feeling of pushing.
(Battery holder 20)

  The battery holder 20 that houses the secondary battery 22 is made of a resin excellent in insulation. In the example shown in the exploded perspective view of FIG. 10, four battery sub-holders 21 that hold half of the extension directions of the four secondary batteries 22 are joined to form one battery holder 20.

  Since the battery holder 20 that holds a large number of such secondary batteries 22 has a considerable weight, the body case 10 that accommodates the battery holder 20 is also required to have a corresponding strength. In particular, a portable power supply device needs to be considered for carrying around or being used outdoors, and a structure that is difficult to break even when subjected to external force such as dropping or collision is desired. Therefore, in the present embodiment, as shown in the exploded perspective view of FIG. 6, the horizontal sectional view of FIG. 12, the vertical sectional view of FIG. 13, etc., only the side surface of the battery holder 20 is placed inside the body case 10. The holder fixture 24 and the substrate fixture 26 are fixed to each other, and a fixing structure for the main body case 10 is not directly provided in the downward direction in the horizontal sectional view of FIG. Further, as shown in the vertical sectional view of FIG. 13, a gap is provided between the main body case 10 and the battery holder 20 on the bottom side. Thus, the heavy battery holder 20 has a structure in which only the side surface is held in the main body case 10 and floats, so that a gap is formed between the battery holder 20 and the main body case 10. As a result, when an unintended external force such as a drop impact is applied, a situation in which the external force directly acts on the battery holder 20 can be avoided and reduced, and the influence of the external force can be alleviated. 22 can be protected.

Moreover, the mechanical strength of the inner case 13 can be improved by providing a rib that does not contact the battery holder 20 as necessary on the bottom surface of the inner case 13.
(Holder fixture 24)

  As the holder fixture 24 for fixing the battery holder 20 to the main body case 10, screwing with screws can be preferably used. In particular, by sharing the screw that joins the first case 11 and the second case 12 of the inner case 13 with the screw that fixes the battery holder 20 to the main body case 10, the number of parts can be reduced and the manufacturing process can be saved. Cost reduction. In this example, as the holder fixture 24, screws are provided at a total of four locations, two in the vertical direction of each side as shown in FIGS. 3, 4, 6 and 13, and further in a symmetrical position. Match.

  Moreover, the holder fixture 24 is preferably disposed between the battery connectors in which the secondary batteries 22 are connected in the longitudinal direction, as shown in FIGS. 3, 4, and 12. Thereby, the center of the battery holder 20 can be fixed and the center of gravity can be stabilized and held in the main body case 10.

  On the other hand, when the battery holder 20 is fixed in the main body case 10, it is necessary to position the circuit board 30. That is, it is necessary to align the positions of the light emitting unit 32, the switch unit 33, and the switch connecting unit 34 mounted on the circuit board 30 so as to match the switch operation unit 18 provided in the main body case 10. Therefore, in the present embodiment, as shown in the horizontal sectional view of FIG. 12, the circuit board 30 is arranged on the side surface of the battery holder 20 and the circuit board 30 is fixed by the main body case 10 and the board fixture 26. . In other words, the positioning of the main body case 10 and the circuit board 30 can be individually determined by fixing the circuit board 30 to the main body case 10 with a member different from the holder fixture 24 that fixes the battery holder 20 to the main body case 10. Therefore, such an alignment operation can be performed easily and reliably. In particular, the switch unit 33 is mounted on the circuit board 30 as shown in FIG. 14A and the like, while the switch operation unit 18 is provided not on the circuit board 30 but on the inner case 13 side. For this reason, if the inner case 13 and the circuit board 30 are not positioned relative to each other, even if the switch operation unit 18 exposed to the outside is operated, there is a possibility that it is not transmitted to the switch unit 33. Therefore, as shown in FIG. 6 and the like, the inner case 13 and the circuit are connected to each other by inserting a screw, which is a board fixing tool 26 for fixing the first case 11 and the second case 12 constituting the inner case 13, into the circuit board 30. Positioning relative to the substrate 30 can be achieved. Furthermore, in this configuration, the board fixture 26 can also be used for fixing the circuit board 30. Thus, by providing the board fixture 26 at a position close to the switch operation unit 18, positioning by fixing the board fixture 26 can be effectively expressed. Preferably, the switch operation unit 18 and the substrate fixture 26 are arranged linearly on the surface of the main body case 10. As a result, the pressing force for operating the switch operating unit 18 is easily transmitted by the switch unit 33 of the circuit board 30 fixed by the board fixing tool 26.

In addition, in order to correctly transmit the operation of the switch operation unit 18 to the switch unit 33, in addition to the two-dimensional alignment, as shown in the height direction, that is, as shown in FIGS. 15A and 15B, the switch unit 33 It is also necessary to adjust the distance between the circuit board 30 on which is mounted and the inner case 13 provided with the switch operation unit 18. For this reason, it is preferable to provide a mechanism for positioning the position of the circuit board 30 in the height direction in the inner case 13. As an example of such a height positioning mechanism, in the example shown in the exploded perspective view of FIG. 14B, a boss 36c through which a screw that is the substrate fixture 26 is inserted is provided in the cover portion 36. The boss 36c protrudes from the back side of the cover portion 36, and is configured such that the tip of the boss 36c contacts the surface of the circuit board 30 when the cover portion 36 and the circuit board 30 are fixed by the board fixture 26. Yes. By adjusting the protruding height of the boss 36c, the height of the circuit board 30 in the inner case 13, that is, the distance between the switch operating portion 18 and the switch portion 33 can be defined.
(Socket part 15)

Further, a socket portion 15 is provided on the upper end side of the main body case 10. The socket unit 15 is electrically connected to a discharge circuit mounted on the circuit board 30, and outputs the secondary battery 22 converted into a predetermined voltage by the voltage conversion circuit mounted on the circuit board 30 to an external electronic device. It is a member for outputting to etc. The socket portion 15 is formed in a bottomed cylindrical shape and opens at the upper end in a state where the main body case 10 is upright. The output unit 50 can be connected to the socket portion 15 so that it can be inserted and removed. The output unit 50 is electrically connected to the socket unit 15 and performs various outputs and operations with electric power supplied from the socket unit 15. As described above, by making the output unit 50 detachable from the socket portion 15, various output units 50 can be prepared and exchanged according to applications, and the portable power supply device can be utilized for various purposes.
(Output unit 50)

  In the example shown in FIG. 11, the output unit 50A includes two USB (product name) terminal B types capable of outputting up to 2A. The specification of the USB terminal is not limited to this. For example, only one USB terminal or three or more USB terminals may be provided, or a micro USB terminal may be provided in addition to a full-size USB terminal. Alternatively, not only a USB terminal but also other standardized power supplyable terminals (for example, lightning (trade name)) can be provided. Further, the output unit 50 is not limited to such a standardized power supplyable terminal but may be a dedicated power supply terminal. For example, it is possible to provide a power supply terminal corresponding to an electronic device to be used, such as a smartphone, a mobile phone, a music player, a tablet, or a notebook PC, and the output unit 50 including the power supply terminal corresponding to the electronic device to be used is provided. By preparing, it is possible to cope with charging various electronic devices by changing only the output unit 50 while making the portable power supply device common.

  Or the output unit 50 may provide not only such a power feeding terminal but another load. For example, if the output unit 50B is an illumination unit provided with a light emitter such as an LED, a fluorescent lamp, or an incandescent lamp, it can be used as a lantern or illumination, and is suitable for outdoor use.

  Alternatively, an electric blanket, an electric fan, a heating element such as a heater, a fan provided with a fan, or the like can be used as the output unit 50C. Furthermore, it is good also as output unit 50D which provided the outlet which incorporates a DC-AC converter and can output AC100V. Alternatively, it may be an output unit 50E provided with an eyeglass connector having a cross section of the number “8” used for an AC adapter or the like.

Furthermore, the output unit 50 is preferably designed to have the same shape and specifications as the accessory socket for a vehicle (so-called cigar socket). As a result, the existing adapter developed for the accessory socket can be used by appropriately replacing it, so that it can be used for more applications. For example, if it can be used in the same manner as an accessory socket for DC12V or DC24V, these adapters that could only be used inside the vehicle can be taken out of the vehicle and used, thereby increasing convenience.
(Lock mechanism)

  Furthermore, it is possible to provide a lock mechanism for locking the output unit 50 so that the output unit 50 does not fall out in a state where the output unit 50 is inserted into the socket portion 15. As a result, problems such as unintentional disconnection and poor contact that become a problem when the output unit 50 is detachable from the socket 15 can be avoided, and the portable power supply device can be used with high reliability.

  In the example illustrated in FIG. 16, the lock mechanism includes a flange portion 52 provided in the output unit 50 and a groove portion 54 provided in the socket portion 15. The flange portion 52 is provided so as to protrude at a joint portion between the output unit 50 and the vicinity of the opening of the socket portion 15. The flanges 52 are provided at three locations around the output unit 50 at intervals of about 120 °.

  On the other hand, the groove portion 54 is formed at a position corresponding to the flange portion 52 in a state where the output unit 50 is inserted into the socket portion 15. As shown in the exploded perspective view of FIG. 5, an opening ring 16 that is opened larger than this is disposed at the opening end of the socket portion 15 in correspondence with the shape of the flange portion 52. That is, the opening ring 16 is formed with a notch 16b that can pass through the flange 52. A groove 54 is formed on the back side of the opening ring 16. Further, the positions of the flange portion 52 and the groove portion 54 are designed in advance so that the flange portion 52 can be inserted into the groove portion 54 in a state where the output unit 50 is inserted into the socket portion 15.

  When the output unit 50 is inserted into the socket part 15, the relative angle between the output unit 50 and the socket part 15 is adjusted so that the flange part 52 can pass through the notch 16b of the opening ring 16, and the flange part 52 opens. In the state of passing through the ring 16, the output unit 50 and the socket part 15 are relatively rotated as shown in FIG. 16, and the flange part 52 is fitted into the groove part 54. In this state, the lock mechanism places the output unit 50 in the locked state. On the other hand, in order to release the locked state, the output unit 50 is rotated in the opposite direction to return the angle so that the flange portion 52 can pass through the notch 16b of the opening ring 16, and then the output unit 50 is extracted from the socket portion 15. . With such a configuration, after the output unit 50 is inserted into the socket portion 15, it can be easily locked and unlocked, and the prevention of unintentional dropout can be realized with a simple configuration.

The lock mechanism is not limited to this configuration, and a known structure that can hold the output unit so as not to fall out of the socket portion can be used as appropriate. Examples of such a lock mechanism include a screw-type groove, fixing by inserting a clamp mechanism or a pin, and the like.
(Socket drain hole 15b)

  As shown in FIG. 17, the socket portion 15 has a socket drain hole 15b formed on the bottom surface thereof. Furthermore, the main body case 10 has a main body drain hole 10b opened on the bottom surface thereof. The main body drain hole 10b and the socket drain hole 15b communicate with each other inside the main body case 10. As a result, even if moisture enters from the opening of the socket portion 15, it can be discharged to the outside through the socket drain hole 15b and the main body drain hole 10b as shown in the schematic vertical sectional view of FIG. Thus, it is possible to avoid a situation in which moisture accumulates in the main body case 10 for a long time. In particular, in a state where the bottomed cylindrical socket portion is opened at the upper end in a state where the main body case is upright, moisture may enter from this portion. Therefore, even if moisture enters the main body case 10 from here, the safety of the portable power supply device can be improved by providing a drainage path that can effectively discharge the moisture. In addition, as described above, the battery holder 20 is slightly lifted from the bottom surface on the inner surface of the main body case 10, so that a space is secured on the bottom surface of the main body case 10, and moisture accumulates in this portion, so that the battery holder 20 directly. Can be avoided. Further, when ribs for improving strength are provided on the bottom surface of the main body case 10, a region in which the liquid is accumulated is defined by the ribs, and a path that can be guided to the drain hole is formed.

  In addition, the secondary battery 22 and the circuit board 30 are in a posture in which the main body case 10 is upright, and both are in an upright posture, so that it is possible to avoid a situation in which they are submerged and improve reliability. If a plurality of secondary batteries 22 are arranged in a horizontal position in the main body case, the entire secondary battery 922 may be submerged when liquid enters and accumulates in the main body case 810 as shown in FIG. Can be considered. In particular, the cylindrical secondary battery 22 has a structure in which positive and negative electrodes are exposed on both side end surfaces of the cylindrical shape. Similarly, when the circuit board is in a horizontal posture, if the liquid is accumulated in the main body case 910 as shown in FIG. 19, the entire circuit board 930 may be submerged, which is not preferable.

On the other hand, in the present embodiment, the secondary battery 22 and the circuit board 30 are both placed in the vertical orientation, so that even if liquid may accumulate in the main body case 10, a short circuit is avoided immediately. It is possible to improve safety. Thus, by arranging the secondary battery 22 and the circuit board 30 in parallel along the flow direction of the liquid that has entered the main body case 10, the risk of a short circuit or the like can be greatly reduced.
(Waterproof bag 40)

  Further, in order to further enhance the waterproof property of the secondary battery 22 and the circuit board 30, they are housed and covered in a waterproof bag 40. The waterproof bag 40 is made of a water-resistant material and is formed in a bag shape opened in one direction. The material that exercises the waterproof bag 40 is a flexible material. Preferably, by using a light-transmitting material, it is possible to visually recognize the internal state after being covered with the waterproof bag 40 and to easily confirm that no abnormality such as disconnection has occurred. As such a material, a plastic sheet can be used, for example, polyimide (PI), polyethylene imide (PEI), polyethylene terephthalate (PET), or the like. These plastic sheets are characterized by excellent flexibility and heat resistance. Further, the electrolytic solution discharged when the safety valve of the secondary battery 22 is opened does not melt and cause a chemical reaction. However, other flexible plastic sheets than those described above can be used for the flexible sheet used in the waterproof bag 40.

It is preferable that the waterproof bag 40 is disposed in a posture in which the opening end is on the lower side in a state where the main body case 10 is self-supporting. With such a configuration, even if liquid enters the main body case 10 from the socket portion 15 side, the upper side of the waterproof bag 40 is not open, so that the risk of liquid entering the waterproof bag 40 can be reduced. As shown in the exploded perspective view of FIG. 7, the battery assembly 1 including the battery holder 20, the circuit board 30, and the cover portion 36 is accommodated from the opening end with the opening end facing downward.
(Lead wire 42)

  On the other hand, the electronic circuit mounted on the circuit board 30 needs to be electrically connected to the socket portion 15 and the charging terminal 19. Therefore, the lead wire 42 extended from the circuit board 30 is pulled out from the opening end. The open end of the waterproof bag 40 has a waterproof structure so that the lead wire 42 is pulled out so that the lead wire 42 is not flooded from the lead-out portion. The lead wire 42 is connected to the socket portion 15 and the charging terminal 19. In particular, the socket portion 15 is connected to the upper socket portion 15 by folding back the lead wire 42 drawn from the lower side of the waterproof bag 40. At this time, the lead wire 42 is preferably arranged on the side opposite to the side on which the circuit board 30 is arranged, as shown in the cross-sectional view of FIG. In particular, the battery holder 20 is fixed to the left and right with the holder fixture 24 in FIG. 12, and the circuit board 30 is disposed on the upper side, while a space is formed on the lower side. Thus, wiring can be realized without increasing the size of the main body case 10.

If necessary, a signal terminal 31 for rewriting the software of the electronic circuit may be provided. In the example of FIG. 8, a sub-board 30B is provided separately from the circuit board 30, the signal terminal 31 is mounted on the sub-board 30 </ b> B, placed outside the waterproof bag 40, and the signal terminal is placed on the inner case 13. 31 is projected. Thereby, it is possible to access the signal terminal 31 with the outer case 14 removed.
(Cover 36)

  In the waterproof bag 40 described above, the circuit board 30 is also housed together with the battery holder 20. At this time, since the switch portion 33, the semiconductor element, and the like are mounted on the circuit board 30, the unevenness is caught when inserted into the waterproof bag 40, or these unevenness is rubbed against the inner surface of the waterproof clothing path during use. It is conceivable that the waterproof bag 40 is damaged. Therefore, the cover portion 36 is disposed on the upper surface of the circuit board 30 to prevent these irregularities from directly touching the waterproof bag 40 to protect the waterproof bag 40. The cover portion 36 preferably has a curved surface in sectional view so as to follow the inner surface of the main body case 10 (see FIG. 12). Further, since the cover portion 36 is insulated from the circuit board 30, it is preferable to use an insulating material. Furthermore, it is preferable that the cover portion 36 is made of a hard material so as to exhibit sufficient strength. In addition, it is preferable to use a light-transmitting material so that the circuit board 30 can be visually recognized with the cover portion 36 attached. Such a material is preferably a light-weight resin that can be easily molded. For example, it can be made of plastic such as PP, PS, and PET.

  Furthermore, it is preferable that the switch connecting portion 34 described above is formed integrally with the cover portion 36. Thereby, by fixing the cover part 36 on the circuit board 30, the switch connection part 34 can be provided simultaneously, and the number of parts and the number of manufacturing steps can be reduced. 8 and 9 show an example of such a cover portion 36. FIG. In this example, the cover portion 36 is formed and engaged with a shape that substantially matches the side shape of the battery holder 20. Specifically, in FIG. 8 and FIG. 9, the upper surface of the cover portion 36 is formed in a convex shape so as to match the concave portion on the front surface of the battery holder 20, and these are engaged with the circuit board 30 sandwiched therebetween. . Further, the curvature radius of the back surface of the cover portion 36 is set to be substantially equal to the inner diameter of the main body case 10 so as to substantially coincide with the inner surface of the main body case 10 as described above. The curved surface of the cover portion 36 and the disk shape that protects the end surface of the secondary battery 22 positioned on the left and right sides of the upper surface of the battery holder 20 are connected to match the curved surface of the inner surface of the main body case 10 as a whole. As shown in the exploded perspective view of FIG. 6, they can be arranged together in a cylindrical inner case 13.

  Further, above the back surface of the cover portion 36, the portion corresponding to the switch operation portion 18 forms a step portion 36b that is recessed in a step shape from the curved surface, and the switch operation portion 18 provided in the first case 11 is the cover portion. 36 to prevent interference. Further, a switch connecting portion 34 is formed in the step portion 36b. The switch connecting portion 34 is formed integrally with the cover portion 36. In this way, by forming the switch connecting portion 34 in the cover portion 36, as described above, it contributes to the reduction of the number of parts and the labor saving of the manufacturing process. In the example of FIG. 8, a U-shaped slit 37 is formed in the stepped portion 36b of the cover portion 36 along the outer shape of the switch connecting portion 34 so that it can be elastically deformed with the left side as a fixed end and the right side as a free end. A switch connecting portion 34 is formed. Further, the left fixed end is formed with a bent portion having a U-shaped cross section, so that the deformation on the fixed end side can be easily absorbed and the durability can be increased. The operation can be performed more smoothly.

  As shown in the exploded perspective view of FIG. 9, such a cover portion 36 is engaged with the board mounting surface side of the battery holder 20 on which the circuit board 30 is disposed to form the battery assembly 1. In this state, the circuit board 30, the battery holder 20, and the cover part 36 are not fixed. Thereafter, as shown in the exploded perspective view of FIG. 7, the battery holder 20 is housed in a waterproof bag 40 and sealed and waterproofed while the lead wire 42 is pulled out from the open end. Further, as shown in the exploded perspective view of FIG. 6, the battery holder 20 is covered with the first case 11 and the second case 12 so as to be sandwiched from the front and back of the waterproof bag 40 and fixed with the holder fixture 24 and the substrate fixture 26. In the inner case 13. While the first case 11 and the second case 12 are connected by screws that are holder fixtures 24, both side surfaces of the battery holder 20 inside are screwed together. At this time, the screw is a wood screw so as to penetrate the waterproof bag 40 with the screw. Further, a waterproof structure is applied to the insertion portion of the wood screw so that the water bag 40 is not submerged from the portion drilled with the wood screw. For example, by placing packing in the screw hole portion and pressing the periphery of the perforated waterproof bag 40 with the packing, the waterproof bag 40 and the inner surface of the main body case 10 are brought into close contact with each other to achieve waterproofing.

  Similarly, the cover 36, the circuit board 30, and the battery holder 20 are fixed to the inner case 13 at a position different from the holder fixing tool 24 by the board fixing tool 26. Similarly, the holder fixture 24 is made of a wood screw so as to penetrate the waterproof bag 40 with a screw, and is further provided with a waterproof structure such as packing so that the waterproof bag 40 is not flooded from the penetrating portion. By separating the fixing structure of the circuit board 30 and the fixing structure of the battery holder 20 in this way, the heavy battery holder 20 is fixed in a state of being floated in the cover portion 36, and the switch portion 33 and the switch operation portion 18 are fixed. Positioning can be realized with the substrate fixture 26.

  The substrate fixture 26 is preferably provided at a position separated from the holder fixture 24. Thereby, when positioning the circuit board 30 with the board | substrate fixture 26, it is because the influence of the fixing position fixed with the holder fixture 24 can be suppressed as much as possible. For example, a slight displacement of the battery holder 20 and the inner case 13 absorbs some positional deviation. In the example shown in FIG. 6, the substrate fixture 26 is provided at a position 90 ° different from the holder fixture 24. Thereby, the board | substrate fixture 26 is spaced apart from the holder fixture 24 at the maximum, and the positioning effect by the board fixture 26 is ensured.

  Even when fixing by the board fixing tool 26, the cover 36, the circuit board 30 and the battery holder 20 can be fixed to the inner case 13 with the waterproof bag 40 interposed by using wood screws. In addition, a waterproof structure can be provided to prevent water from entering from a portion drilled by a wood screw.

  The embodiments and / or examples of the present invention have been described with reference to the drawings. However, the above-described embodiments, examples, and modifications are examples for embodying the technical idea of the present invention, and the present invention is not limited to the above examples. Further, the present specification by no means specifies the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention unless otherwise specified, and are merely explanations. It is just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Further, in the following description, the same name and reference numeral indicate the same or the same members, and the detailed description is omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.

  A power supply apparatus according to the present invention includes an emergency charger for charging a mobile phone, a smartphone, a tablet (slate) type PC, a portable music player, etc., a charger for charging an emergency charger, or a lantern used outdoors. It can be suitably used as a power source for use.

DESCRIPTION OF SYMBOLS 100, 210 ... Portable power supply device 1 ... Battery assembly 10, 810, 910 ... Main body case 10b ... Main body drain hole 11 ... First case 12 ... Second case 13 ... Inner case 14 ... Outer case 15 ... Socket part 15b ... Socket drain hole 16 ... Opening ring 16b ... Notch 18 ... Switch operation part 19 ... Charging terminal 20 ... Battery holder 21 ... Battery sub-holder 22,922 ... Secondary battery 24 ... Holder fixture 26 ... Substrate fixture 30,930 ... Circuit board 30B ... Sub-board 31 ... Signal terminal 32 ... Light emitting part 33 ... Switch part 34 ... Switch connecting part 36 ... Cover part 36b ... Step part 36c ... Boss 37 ... Slit 40 ... Waterproof bag 42 ... Lead wire 50, 50A, 50B, 50C, 50D, 50E ... output unit 52 ... flange 54 ... groove 201 ... cylindrical battery 202 ... outer case 203 ... insulating holder 204 ... circuit board 209 ... battery assembly AC ... AC adapter BD ... electrical equipment

Claims (14)

A power supply device for connecting and supplying electric equipment to be supplied with power,
A body case capable of self-supporting in a posture in which the longitudinal direction is a vertical direction;
A plurality of secondary batteries built in the main body case;
A battery holder for holding the plurality of secondary batteries;
A circuit board on which an electronic circuit electrically connected to the plurality of secondary batteries is mounted;
A socket part that is electrically connected to the circuit board and outputs output from the plurality of secondary batteries to an electrical device;
The socket part is formed in a bottomed cylindrical shape with the upper end opened in a posture in which the body case is self-supporting, and a socket drain hole is formed on the bottom surface.
The circuit board is held in the main body case so as to have a vertical posture in a posture in which the main body case is self-supported,
The plurality of secondary batteries are held by the battery holder in the main body case so that the longitudinal direction thereof is a vertical posture in a posture in which the main body case is self-supported,
The main body case has a main body drain hole opened in a bottom surface in a self-supporting posture, and the main body drain hole and the socket drain hole are communicated with each other. The power supply device according to claim 1, further comprising:
A power supply device comprising: a holder fixture for fixing the battery holder only on a side surface of the main body case. The power supply device according to claim 2, further comprising:
A substrate fixture for fixing the circuit board disposed on one surface of the battery holder to the inner surface of the main body case;
A switch unit provided on the circuit board;
A power supply apparatus comprising: a switch operating unit that is linked to the switch unit and is exposed from a part of the main body case to operate the switch unit. The power supply device according to claim 3, further comprising:
A light emitting part provided at a position facing the central part of the switch operating part;
A switch connecting part that presses the switch part provided at a position facing the peripheral part of the switch operating part or a position not facing the peripheral part of the switch operating part in response to a pressing operation of the switch operating part; A power supply apparatus comprising: The power supply device according to claim 4,
The power supply device, wherein the switch operation unit and the substrate fixture are arranged linearly in the main body case. The power supply device according to any one of claims 1 to 5, further comprising:
A power supply device comprising a curved cover portion covering the upper surface of the circuit board. The power supply device according to any one of claims 1 to 6, further comprising:
A power supply apparatus comprising: a waterproof bag that houses and covers the plurality of secondary batteries and the circuit board and opens in one direction. The power supply device according to claim 7,
The power supply apparatus according to claim 1, wherein the waterproof bag has an opening end positioned on a lower side in a posture in which the body case is self-supporting. It is a power supply device as described in any one of Claims 1-8, Comprising: The power supply device further provided with the output unit which can be inserted and connected in the said socket part. The power supply device according to claim 9, further comprising a lock mechanism that locks the output unit so that the output unit does not fall out in a state where the output unit is inserted into the socket portion. It is a power supply device of Claim 10, Comprising:
The locking mechanism is
A flange provided to project at the joint of the output unit with the vicinity of the opening of the socket;
In the state where the output unit of the socket portion is inserted into the socket portion, a groove portion formed at a position corresponding to the flange portion is provided.
After the output unit is inserted into the socket part, the lock mechanism is configured to lock the output unit by rotating the output unit in the cylindrical direction of the socket part and inserting the flange part into the groove part. A power supply device characterized by comprising: It is a power supply device as described in any one of Claims 9-11,
The power supply apparatus, wherein the output unit includes one or more USB output terminals. It is a power supply device as described in any one of Claims 1-12,
The power supply device, wherein the socket portion is formed in the same shape as a vehicle accessory socket. It is a power supply device as described in any one of Claims 1-13,
A power supply device, wherein the secondary battery has a cylindrical outer can.

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