JP2013099200A - Portable power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable power supply device that can supply power-operated to electrical equipment and can be used for other purposes, such as a home power supply during an emergency.SOLUTION: A portable power supply device 1 includes: a battery 2 that is detachably connected to electrical equipment and supplies power-operated to the electrical equipment; and a charger 3 that is detachably attached to the battery 2 and charges the battery 2. The charger 3 includes: an invertor 55 that converts DC voltage of the battery 2 to AC voltage; and an electric outlet for connecting home appliances 56 that outputs the AC voltage converted by the invertor 55.

Description

  The present invention relates to a portable power supply device including a battery and a charger for charging the battery.

  Conventionally, many power supply devices that require high power and supply operating power to electrical equipment that is used in a disconnected state from a power source are battery modules (hereinafter referred to as “batteries”) that are specially designed for each equipment, and Consists of a corresponding dedicated charger.

  As an example of such a power supply device, Patent Document 1 includes a battery that can be attached to and detached from an electric vehicle, and a charger that is provided separately from the electric vehicle and charges the battery described above. A power supply is disclosed.

JP 2003-267283 A

  Large-capacity batteries such as those described above are designed to meet the requirements of the equipment to be used, so the external shape and connection terminal shape are specially designed and lack general versatility. The function was limited to battery charging. For this reason, even if a certain amount of power is stored in the battery of the power supply device in an emergency such as a disaster, it cannot be used as a household power source.

  Therefore, in consideration of the above circumstances, the present invention can separate only the battery during normal times and supply operating power to the electrical equipment, and can be used for other uses such as a household power source by combining the battery and the charger in an emergency. An object of the present invention is to provide a portable power supply device that can be used.

  The present invention relates to a portable power supply device comprising: a battery that is detachably connected to an electrical device and supplies operating power to the electrical device; and a charger that is detachably mounted to charge the battery. And the said charger is provided with the inverter which converts the direct current voltage of the said battery into alternating current, and the household appliance connection socket which outputs the alternating current converted by this inverter, It is characterized by the above-mentioned.

  By adopting such a configuration, the direct current voltage of the battery can be easily converted into alternating current and used as a power source for home appliances for various purposes.

  The battery is provided with a handle for lifting the battery and a battery side engaging portion, and the charger is provided with a charger side engaging portion at a position corresponding to the battery side engaging portion. When the battery is attached to the charger, the battery side engaging portion engages with the charger side engaging portion, the battery is fixed to the charger, and the charging is performed as the handle is pulled up. A vessel may be lifted together with the battery.

  By adopting such a configuration, it becomes possible to easily carry the entire power supply device as if carrying a battery, and the portability of the power supply device is improved. Further, since the battery and the charger can be lifted integrally by pulling up the handle provided on the battery, it is not necessary to provide a handle on both the battery and the charger, and the number of parts can be reduced.

  The handle may be provided on an upper portion of the battery, and the battery side engaging portion may be provided on a bottom portion of the battery.

  By providing the handle on the upper part of the battery in this manner, the power supply device can be easily lifted and transported, and the portability of the power supply device is further improved. Further, by providing the battery side engaging portion at the bottom of the battery, the charger side engaging portion corresponding to the battery side engaging portion is positioned directly below the battery. Therefore, the charger is less likely to swell in the horizontal direction, and the width of the charger in the horizontal direction can be reduced as compared with, for example, a case where the battery side engaging portion is provided on the side surface of the battery. In connection with this, the installation space of the whole power supply device can be reduced.

  The battery may have a shape that is long in the vertical direction, and a connection terminal with the charger may be provided on the top of the battery.

  Thus, by providing the connection terminal on the upper part of the battery that is long in the vertical direction, the connection terminal of the battery is disposed at a position separated from the battery side engagement portion provided at the bottom of the battery. Accordingly, when the battery is attached to the charger, the position of the connection terminal of the battery can be finely adjusted, and the connection terminal of the battery can be easily connected to the connection terminal of the charger. Further, by providing the connection terminal at the upper part of the battery, the connection terminal is arranged at a position close to the handle provided at the upper part of the battery. Therefore, when connecting the connection terminal of a battery to the connection terminal of a charger or an electric vehicle, it becomes easy to confirm the position of each connection terminal.

  The charger may be provided with a support surface that faces at least one surface of the battery and extends in a direction in which the battery is attached or detached.

  By providing the support surface having such a shape, when the battery is attached to or detached from the charger, the battery is guided by the support surface along the attaching / detaching direction, and the battery can be prevented from falling down. Therefore, the battery can be easily attached to and detached from the charger.

  In a state where the battery is mounted on the charger, the center of gravity of the charger includes a center axis of the handle and an engagement point between the battery side engaging portion and the charger side engaging portion in a side view. It may be located on the opposite side of the connection terminal with the battery across the gap.

  By adopting such a configuration, when the power supply device is lifted with the battery mounted on the charger, a moment is generated in a direction in which the opposite surface of the battery is pressed against the support surface of the charger. For this reason, the connection terminals are unlikely to come off, the connection state of the connection terminals can be reliably maintained, and damage to each connection terminal can be prevented.

  The support surface includes a flat portion that is inclined at a predetermined angle with respect to the attachment / detachment direction of the battery, and a raised portion that protrudes from the flat portion and has a smaller inclination angle with respect to the attachment / detachment direction of the battery than the flat portion, The battery may be configured to move along the raised portion after the battery moves along the flat portion when the battery is attached to the charger.

  By adopting such a configuration, the battery is reliably brought into contact with a flat portion having a relatively large inclination angle with respect to the battery attachment / detachment direction, and then the battery is attached / detached by a raised portion having a relatively small inclination angle with respect to the battery attachment / detachment direction It can be easily guided along the direction. Along with this, the battery can be easily attached to and detached from the charger.

  The battery may supply electric power for driving to the electric vehicle.

  In particular, since a battery for an electric vehicle that requires a large amount of electric power to drive a motor normally has a large capacity, it can be expected to be used for a long time as a power source for home electric appliances even though it is a portable power supply device.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the portable power supply device which can supply working electric power to an electric equipment and can be used for other uses, such as an emergency household power supply.

It is a front view which shows the portable power supply device which concerns on one Embodiment of this invention. In the portable power supply device which concerns on one Embodiment of this invention, it is a perspective view which shows a battery. In the portable power supply device which concerns on one Embodiment of this invention, it is a top view which shows a battery. In the portable power supply device which concerns on one Embodiment of this invention, it is a side view which shows a battery. In the portable power supply device which concerns on one Embodiment of this invention, it is a bottom view which shows a battery. 1 is a perspective view showing a charger in a portable power supply device according to an embodiment of the present invention. It is a front view which shows an engagement mechanism in the charger of the portable power supply device which concerns on one Embodiment of this invention. In the portable power supply device which concerns on one Embodiment of this invention, it is a side view which shows a charger. In a portable power supply device according to an embodiment of the present invention, (a) is a side view showing a state in which a battery is held along a flat portion of a support surface of a charger, and (b) is for charging a battery. It is a side view which shows the state currently lowered | hung along the protruding part of the support surface of a charger, (c) is a side view which shows the state which mounted | wore the battery with the battery charger. In the charger of the portable power supply device according to the embodiment of the present invention, (a) is a front view illustrating a state before the striker is engaged with the hook of the engagement mechanism, and (b) is a diagram illustrating the striker. It is a front view which shows the state after engaging with the hook of an engagement mechanism. 1 is a side view of a motorcycle equipped with a battery of a portable power supply device according to an embodiment of the present invention. 1 is a perspective view showing the periphery of a battery storage unit in a motorcycle equipped with a battery of a portable power supply device according to an embodiment of the present invention. In the portable power supply device according to one embodiment of the present invention, (a) is a conceptual diagram showing use during charging, and (b) is a conceptual diagram showing use during discharging.

  A preferred embodiment of a portable power supply device (hereinafter abbreviated as “power supply device”) according to the present invention will be described below with reference to FIGS. In the present embodiment, a case where the configuration of the present invention is applied to a power supply device that supplies driving power to an electric motorcycle will be described. Hereinafter, the up / down, left / right, and front / rear directions are based on the state in which the battery is mounted on the charger (see FIG. 1), and the front side of the page in FIG. 1 is the front side (front side) of the power supply device. An arrow Fr appropriately shown in each figure indicates the front side.

  As shown in FIG. 1, the power supply device 1 includes a battery 2 and a charger 3 to which the battery 2 is detachably attached.

  First, the battery 2 will be described. As shown in FIG. 2, the battery 2 has a shape that is long in the vertical direction, and is entirely covered by a front and rear split battery case 4. A battery block (not shown) formed by connecting a plurality of batteries in series and in parallel is housed in the battery case 4. In the present embodiment, a lithium ion battery is used as the battery described above.

  On the front and rear surfaces of the battery case 4, a horizontally long rectangular heat dissipating portion 6 composed of a large number of fins 5 is provided in a plurality of stages at predetermined intervals above and below. On both the left and right sides of the battery case 4, guide protrusions 7 extend in the vertical direction.

  A handle 8 for lifting the battery 2 is provided at an upper portion (more specifically, an upper end portion) of the battery 2. The handle 8 includes a pair of left and right attachment portions 10 and a grip portion 11 that connects the attachment portions 10 and extends in the left-right direction, and has a substantially U shape. The base end portion (the end portion on the side away from the grip portion 11) of each attachment portion 10 is rotatably supported by a handle support portion 12 projecting from the upper left corner portion and the upper right corner portion of the battery case 4. Thus, the handle 8 can be tilted between the standing posture (see the solid line in FIGS. 3 and 4) and the tilting posture (see the two-dot chain line in FIGS. 3 and 4). As shown in FIG. 3, the center axis A of the handle 8 (the center axis of the grip portion 11 with the standing posture as a reference) passes directly above the center of gravity G <b> 1 of the battery 2.

  As shown in FIG. 5, a horizontally long rectangular lower end opening 13 is provided in the center of the bottom surface of the battery 2, and a round bar-like shape as a battery side engaging portion is formed inside (upper side) of the lower end opening 13. The striker 14 is extended in the front-back direction. The striker 14 is provided at the bottom of the battery 2. The striker 14 is located directly below the center of gravity G1 of the battery 2, and, as shown in FIG. 4, the center axis A of the handle 8 and the expected engagement position B of the striker 14 (in this embodiment, the front of the striker 14). The virtual plane S including the part) is a vertical plane that passes through the center of gravity G1 of the battery 2. In other words, the planned engagement position B of the striker 14 overlaps the virtual plane S including the central axis A of the handle 8 and the center of gravity G1 of the battery 2.

  A box-shaped terminal accommodating portion 15 projects from the upper part of the front surface of the battery 2. As shown in FIG. 5, an upper opening 16 having a substantially horizontally long rectangular shape is provided on the lower surface of the terminal accommodating portion 15. In the terminal accommodating part 15, a plurality of battery side connection terminals 17 are arranged in parallel at positions facing the upper opening 16. Each battery side connection terminal 17 is connected to the battery block described above via a lead wire (not shown).

  Next, the charger 3 will be described. As shown in FIG. 6, the charger 3 includes a base portion 18 that has a flat, substantially rectangular parallelepiped shape, and a support portion 20 that protrudes upward from the front portion of the base portion 18.

  On both the left and right sides of the rear portion of the base portion 18, guide pieces 21 protrude upward, and a recessed battery mounting portion 22 is provided between each guide piece 21 and the support portion 20. Each guide piece 21 includes a side guide portion 23 extending in the front-rear direction and a rear guide portion 24 bent from the rear end of the side guide portion 23 toward the inner side in the left-right direction. It has a letter shape. A guide recess 25 is provided on the inner surface of the side guide portion 23 in the vertical direction. A communication part 26 having a trapezoidal shape in a rear view that is reduced in diameter toward the lower side is formed at the facing interval of the rear guide part 24. An air exhaust port 27 is provided at the lower part of the side surface of the base unit 18.

  An engagement mechanism 28 is fixed to the upper surface of the base portion 18 at a position corresponding to the bottom surface of the battery mounting portion 22. As shown in FIG. 7, the engagement mechanism 28 includes a base plate 30 erected on the upper surface of the base portion 18, and a first rotation plate that is rotatably supported by the base plate 30 via a first rotation shaft 31. 32, a second rotating plate 34 rotatably supported by the base plate 30 via the second rotating shaft 33, a coil spring 35 (traction means) for connecting the first rotating plate 32 and the second rotating plate 34, It has.

  The base plate 30 includes a fixed plate 36 disposed along the upper surface of the base portion 18, and a guide plate 37 bent upward from the rear end portion of the fixed plate 36. It is L-shaped. The fixing plate 36 is fixed to the upper surface of the base portion 18 via a fixing screw 38. A substantially U-shaped guide groove 40 opened upward is provided at the center in the left-right direction of the guide plate 37.

  At the upper end of the first rotating plate 32, a hook 41 as a support portion side engaging portion is provided at a position corresponding to the striker 14 of the battery 2, and the hook 41 is provided with an engaging recess 42. The first rotation plate 32 is provided with a rotation restriction groove 43 below the hook 41, and a first spring mounting portion 44 is provided further below the rotation restriction groove 43. One end of a coil spring 35 is fixed to the first spring mounting portion 44.

  A rotation restricting protrusion 45 extending toward the first rotating plate 32 is provided below the second rotating plate 34, and a second spring mounting portion 46 is provided below the rotation restricting protrusion 45. The other end of the coil spring 35 is fixed to the second spring mounting portion 46. A wire attachment portion 47 is provided on the opposite side of the rotation restricting projection 45 across the second spring attachment portion 46 under the second rotation plate 34, and one end of a wire 48 is attached to the wire attachment portion 47. Yes. The other end of the wire 48 is attached to operation means (not shown) such as a release lever or a release key provided in the charger 3.

  As shown in FIG. 6, side concave portions 49 having a substantially trapezoidal shape in a side view are provided on the left and right upper portions of the support portion 20 from the front portion to the rear end portion. A substantially rectangular support surface 50 extends along the vertical direction on the rear surface of the support portion 20. The support surface 50 includes a flat portion 51 and a raised portion 52 that protrudes on both the left and right sides of the flat portion 51 and extends in the vertical direction. The flat portion 51 and the raised portion 52 are inclined at a predetermined angle with respect to the vertical direction, and the inclined angle of the raised portion 52 with respect to the vertical direction is smaller than the inclined angle of the flat portion 51 with respect to the vertical direction (FIG. 8). reference). Each raised portion 52 has a substantially semi-cylindrical shape (arch shape), and the upper end surface of each raised portion 52 is curved in a spherical shape. Each raised portion 52 is reduced in a tapered shape downward. In addition, G2 of FIG. 8 has shown the gravity center of the charger 3. FIG.

  As shown in FIG. 6, a substantially rectangular parallelepiped terminal recess 53 is provided at the upper end of the support surface 50 between the upper surface of the support portion 20, and a plurality of terminal recesses 53 are formed on the bottom surface of the terminal recess 53. The charger side connection terminals 54 are arranged in parallel.

  The charger side connection terminal 54 is electrically connected to a home appliance connection outlet 56 (see FIG. 1) provided on the front surface of the support portion 20 via an inverter 55 housed in the charger 3. Yes. This home appliance connection outlet 56 corresponds to AC 100V. The charger side connection terminal 54 is connected to a power cable 58 via an AC / DC converter 57 housed in the charger 3. The power cable 58 is inserted into a cable insertion hole (not shown) provided in the base portion 18 and drawn out of the charger 3. A plug 59 is provided at the tip of the power cable 58.

  A method of attaching / detaching the battery 2 to / from the charger 3 in the power supply device 1 configured as described above will be described with reference to FIGS. 9 and 10.

  In order to attach the battery 2 to the charger 3, first, the handle 2 is gripped to lift the battery 2, and the battery 2 is placed on the flat portion of the support surface 50 of the charger 3 as shown in FIG. Hold along 51. In the state where the battery 2 is lifted, the battery 2 takes an upright posture, and the virtual plane S is a vertical plane.

  When the battery 2 is lowered along the flat portion 51 of the support surface 50 of the charger 3 in this state, the battery 2 is placed on the raised portion 52 of the support surface 50 as shown in FIG. Contact. Then, the battery 2 is lowered along the raised portion 52 of the support surface 50 while the guide protrusion 7 of the battery 2 is engaged with the guide recess 25 of the charger 3, and the battery 2 is inserted into the battery mounting portion 22 of the charger 3. I will do it.

  Accordingly, as shown in FIG. 10A, the striker 14 of the battery 2 approaches the engagement mechanism 28 of the charger 3, and the striker 14 enters the guide groove 40 of the base plate 30 of the engagement mechanism 28. Then, the striker 14 comes into contact with the hook 41 of the first rotation plate 32 of the engagement mechanism 28.

  In this state, when the battery 2 is pressed downward, the striker 14 presses the hook 41 downward, and as shown by an arrow a in FIG. The plate 32 rotates in one direction (clockwise when viewed from the front). By this rotation, as shown in FIG. 10B, the striker 14 engages with the engagement recess 42 of the hook 41 at the expected engagement position B, and the second rotation restriction groove 43 of the first rotation plate 32 The rotation restricting protrusion 45 of the rotating plate 34 is engaged, and the striker 14 cannot move. As a result, the battery 2 is fixed to the charger 3, and the charger 3 can be lifted integrally with the battery 2 as the handle 8 is pulled up.

  In parallel with the engagement of the striker 14 with the hook 41, the battery side connection terminal 17 of the battery 2 is connected to the charger side connection terminal 54 of the charger 3 as shown in FIG. 9C. To do. Thereby, the charger 3 and the battery 2 are electrically connected.

  Thus, the mounting of the battery 2 on the charger 3 is completed. When the battery 2 is mounted on the charger 3 in this way, the center of gravity G2 of the charger 3 moves to a position G3 that is closer to the center of gravity G1 of the battery 2. The center of gravity G3 of the charger 3 (the center of gravity of the integrated battery 2 and the charger 3) is located on the opposite side of the charger side connection terminal 54 across the virtual plane S.

  Next, a method for removing the battery 2 from the charger 3 will be described.

  First, the operating means provided in the charger 3 is operated to pull the wire 48 in one direction (right direction in the drawing) as indicated by an arrow b in FIG. Accordingly, as indicated by an arrow c in FIG. 10B, the second rotation plate 34 of the engagement mechanism 28 rotates in one direction (counterclockwise in front view). By this rotation, the engagement of the rotation restricting groove 43 of the first rotating plate 32 and the rotation restricting protrusion 45 of the second rotating plate 34 is released, and the first rotating plate 32 rotates in the other direction (counterclockwise when viewed from the front). To do. Accordingly, the first rotating plate 32 is restored to the state shown in FIG. 10A, and the movement restriction of the striker 14 is released. In this state, lifting the battery 2 from the charger 3 completes the removal of the battery 2 from the charger 3. As is clear from the above descriptions, in this embodiment, the direction in which the battery 2 is attached to and detached from the charger 3 is the vertical direction.

  As described above, in the present embodiment, since the charger 3 is configured to be lifted integrally with the battery 2 as the handle 8 is pulled up, the power supply device 1 can be easily transported as if the battery 2 is being carried. Thus, the portability of the power supply device 1 is improved. Moreover, since the battery 2 and the charger 3 can be lifted integrally by pulling up the handle 8 provided on the battery 2, it is not necessary to provide the handle 8 on both the battery 2 and the charger 3, and the number of parts is reduced. can do.

  Moreover, since the handle 8 is provided in the upper part of the battery 2, it becomes easy to lift and carry the power supply device 1, and the portability of the power supply device 1 further improves. Further, since the striker 14 is provided at the bottom of the battery 2, the hook 41 of the charger 3 corresponding to the striker 14 is positioned directly below the battery 2. Therefore, the charger 3 is less likely to swell in the horizontal direction, and the width of the charger 3 in the horizontal direction can be reduced as compared with, for example, the case where the striker 14 is provided on the side surface of the battery 2. In connection with this, the installation space of the power supply device 1 can be made small.

  Moreover, in this embodiment, the striker 14 is provided in the bottom part of the battery 2, and the engagement mechanism 28 is being fixed to the upper surface of the base part 18 of the charger 3 in connection with this. With such a configuration, the axial force direction of the fixing screw 38 that fixes the engagement mechanism 28 to the upper surface of the base portion 18 is the vertical direction (see FIG. 7). Therefore, when the battery 2 and the charger 3 are lifted integrally, the fixing screw 38 receives a force in the axial direction, and the engaging mechanism 28 is provided on the side surface of the charger 3 so that the shaft of the fixing screw 38 is Compared to the case where the force direction is the horizontal direction, the fixing screw 38 is less susceptible to shearing force and bending force, which is advantageous in terms of strength. Therefore, sufficient fixing strength can be ensured by the small engagement mechanism 28, and the engagement mechanism 28 can be made compact.

  Moreover, since the battery side connection terminal 17 is provided in the upper part of the battery 2 long to an up-down direction, the battery side connection terminal 17 will be arrange | positioned in the position away from the striker 14 provided in the bottom part of the battery 2. . Accordingly, when the battery 2 is attached to the charger 3, the position of the battery side connection terminal 17 can be easily finely adjusted, and the battery side connection terminal 17 can be easily connected to the charger side connection terminal 54. It becomes possible. Further, by providing the battery side connection terminal 17 on the upper part of the battery 2, the battery side connection terminal 17 is arranged at a position close to the handle 8 similarly provided on the upper part of the battery 2. Therefore, when the battery side connection terminal 17 is connected to the charger side connection terminal 54, it becomes easy to confirm the positions of the connection terminals 17 and 54.

  Further, since the charger 3 is provided with a support surface 50 that faces the front surface of the battery 2 and extends along the attachment / detachment direction (vertical direction) of the battery 2, the battery 2 is supported when the battery 2 is attached to or detached from the charger 3. It is possible to guide the battery 2 along the attaching / detaching direction by the surface 50 and to prevent the battery 2 from falling down. Therefore, the battery 2 can be easily attached to and detached from the charger 3.

  In addition, when the battery 2 is mounted on the charger 3, the battery 2 is configured to descend along the raised portion 52 of the support surface 50 after descending along the flat portion 51 of the support surface 50. Therefore, after the battery 2 is reliably brought into contact with the flat portion 51 having a relatively large inclination angle with respect to the attachment / detachment direction (vertical direction) of the battery 2, the battery 2 is formed by the raised portion 52 having a relatively small inclination angle with respect to the attachment / detachment direction of the battery 2. Can be easily guided along the attaching / detaching direction. Accordingly, the battery 2 can be easily attached to and detached from the charger 3.

  9C, the center of gravity G3 of the charger 3 is on the opposite side of the charger side connection terminal 54 across the virtual plane S with the battery 2 attached to the charger 3. positioned. Along with this, when the power supply device 1 is lifted, a moment in the direction of pressing the front surface of the battery 2 against the support surface 50 of the charger 3 is generated (see arrow X in FIG. 9C). Therefore, it is difficult for the connection terminals 17 and 54 to come off, the connection state of the connection terminals 17 and 54 can be reliably maintained, and damage to the connection terminals 17 and 54 can be prevented.

  In the present embodiment, the striker 14 of the battery 2 overlaps the virtual plane S, and the virtual plane S is parallel to the attachment / detachment direction (vertical direction) of the battery 2 with respect to the charger 3. Therefore, when attaching / detaching the battery 2 to / from the charger 3, it is easy to apply a force, and it is difficult for the force to be generated in a direction in which the battery 2 is twisted. Therefore, the battery 2 can be easily attached to and detached from the charger 3.

  Further, in the present embodiment, the virtual plane S is a vertical plane when the battery 2 is lifted, and accordingly, when the battery 2 is mounted on the charger 3, the bottom surface of the battery 2 faces directly below. Become. Therefore, the striker 14 and the hook 41 can be easily aligned.

  Next, an electric motorcycle that is supplied with driving power by the battery 2 of the power supply device 1 will be described with reference to FIGS. 11 and 12. Hereinafter, the vertical and horizontal directions and the front and rear directions indicate directions viewed from the driver who rides the electric motorcycle.

  As shown in FIG. 11, the electric motorcycle 61 is provided with a vehicle body frame 62 constituting a framework of the vehicle body. The vehicle body frame 62 includes a head pipe 63 disposed at the upper end of the front portion thereof, a down tube 64 extending rearward and downward from the head pipe 63, and extending rearward and upward from the rear end of the down tube 64. A rear frame 65.

  A front fork 66 is supported on the head pipe 63, and a front wheel 67 is pivotally supported at the lower end of the front fork 66. A steering shaft 68 is attached to the head pipe 63, and a handle bar 70 is fixed to the upper end of the steering shaft 68.

  The periphery of the head pipe 63 and the down tube 64 is covered with a front cover 71 from the front and covered with a leg shield 72 from the rear. A front end portion of the power unit 73 is supported at the rear lower portion of the down tube 64 so as to be swingable in the vertical direction, and a rear wheel 74 is pivotally supported on the rear end portion of the power unit 73 and a motor for driving the rear wheel 74. 75 is fixed.

  The rear frame 65 is covered with a frame cover 76, and a low-floored footboard 77 is provided between the frame cover 76 and the leg shield 72 so that the driver can place his / her feet when riding. An inverter 78 is accommodated in the board 77. A driver seat 80 is provided at the upper end of the frame cover 76, and a battery box 81 is provided below the driver seat 80.

  As shown in FIG. 12, the battery box 81 is opened upward to form a box shape. A seat hinge 82 is provided on the upper front of the battery box 81, and the driver seat 80 is supported at the upper end of the battery box 81 so as to be openable and closable by attaching a front end portion of the driver seat 80 to the seat hinge 82.

  Inside the battery box 81, a front storage part 83 and a rear storage part 84 are arranged side by side in the front-rear direction. The battery 2 is detachably stored in the front storage portion 83, and the spare battery 2 is detachably stored in the rear storage portion 84.

  As shown in FIG. 11, a controller 85 is provided in front of the battery box 81. The controller 85 is provided with a vehicle side connection terminal (not shown), and the battery 2 and the controller 85 are electrically connected by connecting the vehicle side connection terminal to the battery side connection terminal 17 of the battery 2. It has come to be.

  In the electric motorcycle 61 configured as described above, electric power is supplied from the battery 2 to the vehicle side via the controller 85, and the motor 75 and the rear wheel 74 are rotated by this electric power, so that the electric motorcycle 61 can travel. It becomes. Therefore, when the electric power stored in the battery 2 decreases, the battery 2 needs to be charged.

  In order to charge the battery 2, the driver seat 80 of the electric motorcycle 61 is opened, the battery 2 is removed from the battery box 81, and the battery 2 is attached to the charger 3 by the method described above. Then, as shown in FIG. 13A, a plug 59 provided at the tip of the power cable 58 of the charger 3 is connected to, for example, a household outlet 91 (AC100V commercial power supply) provided on the inner wall of the house. Connecting. As a result, the AC voltage output from the household outlet 91 is supplied to the battery 2 after being converted into direct current by the AC / DC converter 57 of the charger 3, and the battery 2 is charged. When the charging of the battery 2 is completed, the battery 2 is removed from the charger 3 by the above-described method, and is attached to the battery box 81 of the electric motorcycle 61 again.

  Next, a method of using the power supply device 1 described above as a home power supply in an emergency such as a disaster will be described.

  First, the battery 2 is removed from the battery box 81 of the electric motorcycle 61 and attached to the charger 3 in the same manner as when charging the battery 2 described above. Then, as shown in FIG. 13 (b), a plug 94 provided at the tip of a connection cable 93 of a home appliance 92 (for example, a desk lamp) is connected to a home appliance connection outlet 56 provided in the charger 3. Connect and switch the operation mode of the charger 3 from the charge mode to the discharge mode. This switching may be performed manually, for example, by operating a switching means (not shown) such as a key or button provided in the charger 3, or the household appliance connection outlet 56 of the charger 3 This may be done automatically as the plug 94 of the product 92 is connected.

  Along with the switching of the operation mode, the DC voltage of the battery 2 can be converted into alternating current (AC 100 V) by the inverter 55 and output from the home appliance connection outlet 56 to the home appliance 92.

  In the present embodiment, the remaining battery capacity (Controller Area Network communication) is performed between the AC / DC converter 57 of the battery 2 and the charger 3 and between the inverter 2 of the battery 2 and the charger 3 (Controller Area Network communication). The battery remaining capacity is accurately grasped, and the grasped battery remaining capacity can be accurately displayed on the remaining amount display unit provided in the battery 2 or the charger 3.

  In the present embodiment, as described above, the charger 3 is provided with the inverter 55 and the outlet 56 for connecting home appliances, so that the DC voltage of the battery 2 can be easily converted to AC and used as a power source for the home appliance 92. Can be used. In particular, the battery 2 that supplies driving power to an electric vehicle such as the electric two-wheeled vehicle 61 usually requires a large capacity because it requires a large amount of power to drive the motor 75. Therefore, the portable power supply device 1 can be expected to be used for a long time as a power source for the home appliance 92.

  As described above, the battery 2 of the power supply device 1 is usually separated from the charger 3 and used alone as a drive source for the electric motorcycle 61. In an emergency, the battery 2 can be attached to the charger 3 and used as a general-purpose power source. In addition, both the battery 2 and the charger 3 can be easily carried.

  Further, by using the battery 2 that supplies driving power to the electric motorcycle 61 as a household power source, the generation of exhaust gas can be suppressed as compared with the case of using a conventional generator using fossil fuel. For this reason, the power supply device 1 can be used indoors in an emergency such as a disaster, and the convenience of the power supply device 1 as an emergency power supply is improved.

  Moreover, the lithium ion battery which comprises the battery 2 of this embodiment generally has high energy density per unit volume compared with a lead acid battery, for example. Therefore, it is possible to realize a compact and large-capacity battery 2 by configuring the battery 2 with a lithium ion battery.

  On the other hand, when a lithium ion battery is used, it is necessary to suppress overcharge and overdischarge. In this regard, in this embodiment, as described above, by performing CAN communication between the battery 2 and the charger 3, the remaining capacity of the battery 2 can be accurately grasped and displayed, so that overcharge and overdischarge are prevented. It is possible to prevent it in advance, and it is possible to ensure safety. In addition, as a specific configuration for preventing overcharge and overdischarge in advance, for example, a configuration for displaying a warning for notifying overcharge or overdischarge or issuing an alarm according to the remaining battery capacity is adopted. it can. Moreover, the structure which stops charge and discharge according to a battery remaining capacity is employable.

  In the present embodiment, the case where the charger 3 is provided with the guide recess 25 for guiding the battery 2 when the battery 2 is attached to the charger 3 has been described. For example, the lateral width of the charger 3 and the lateral width of the battery 2 are substantially the same. If they are the same, the guide recess 25 may not be provided.

  In the present embodiment, the case where the battery block of the battery 2 is constituted by a lithium ion battery has been described. However, in another different embodiment, the battery block of the battery 2 by another rechargeable battery such as a nickel hydrogen battery or a nickel cadmium battery. May be configured.

  In the present embodiment, the case where the power supply device 1 is used as an emergency home power supply has been described as an example. However, it goes without saying that the power supply device 1 can be used as a home power supply in normal times other than emergency.

  In the present embodiment, the case where the configuration of the present invention is applied to the electric motorcycle 61 has been described. However, in another different embodiment, the configuration of the present invention is applied to an electric small vehicle other than the electric motorcycle 61 such as an electric wheelchair or an electric bicycle. May be applied, or the configuration of the present invention may be applied to a relatively large electric vehicle such as an electric vehicle. Moreover, you may apply the structure of this invention to electric equipments other than an electric vehicle.

DESCRIPTION OF SYMBOLS 1 Portable power supply device 2 Battery 3 Charger 8 Handle 11 Holding part 14 Striker (battery side engaging part)
17 Battery side connection terminal 41 Hook (charger side engaging part)
DESCRIPTION OF SYMBOLS 50 Support surface 51 Flat part 52 Raised part 54 Charger side connection terminal 55 Inverter 56 Outlet for home appliance connection 61 Electric motorcycle (electric equipment)

Claims (8)

A portable power supply device comprising: a battery that is detachably connected to an electrical device and supplies operating power to the electrical device; and a charger that is detachably mounted to charge the battery.
The charger is
An inverter that converts the DC voltage of the battery into AC;
A portable power supply device comprising: an outlet for connecting home appliances that outputs alternating current converted by the inverter. The battery is provided with a handle for lifting the battery, and a battery side engaging portion,
The charger is provided with a charger side engaging portion at a position corresponding to the battery side engaging portion,
When the battery is attached to the charger, the battery-side engaging portion engages with the charger-side engaging portion, the battery is fixed to the charger, and the charger is lifted as the handle is lifted. The portable power supply device according to claim 1, wherein the portable power supply device is lifted integrally with the battery. The handle is provided on the top of the battery,
The portable power supply device according to claim 2, wherein the battery side engaging portion is provided at a bottom portion of the battery. The battery has a long shape in the vertical direction,
The portable power supply device according to claim 3, wherein a connection terminal with the charger is provided on an upper portion of the battery.   The said charger is provided with the support surface which opposes at least one surface of the said battery, and is extended along the attachment or detachment direction of the said battery, The Claim 1 characterized by the above-mentioned. Portable power supply.   In a state where the battery is mounted on the charger, the center of gravity of the charger includes a center axis of the handle and an engagement point between the battery side engaging portion and the charger side engaging portion in a side view. The portable power supply device according to claim 5, wherein the portable power supply device is located on the opposite side of the connection terminal to the battery with the battery interposed therebetween. The support surface is
A flat portion that is inclined at a predetermined angle with respect to the attachment / detachment direction of the battery;
Bulges from the flat part, and includes a bulge part having an inclination angle smaller than the flat part with respect to the attachment / detachment direction of the battery,
The structure according to claim 5 or 6, wherein when the battery is mounted on the charger, the battery moves along the raised portion after moving along the flat portion. Portable power supply.   The portable power supply device according to claim 1, wherein the battery supplies driving electric power to the electric vehicle.